SC16C850SVIBS,157 NXP Semiconductors, SC16C850SVIBS,157 Datasheet
SC16C850SVIBS,157
Specifications of SC16C850SVIBS,157
SC16C850SVIBS
SC16C850SVIBS
Related parts for SC16C850SVIBS,157
SC16C850SVIBS,157 Summary of contents
Page 1
SC16C850SV 1.8 V single UART, 20 Mbit/s (max.) with 128-byte FIFOs, infrared (IrDA), and XScale VLIO bus interface Rev. 2 — 22 March 2011 1. General description The SC16C850SV is a 1.8 V, low power single channel Universal Asynchronous Receiver ...
Page 2
... NXP Semiconductors Software compatible with industry standard SC16C650B Software selectable baud rate generator Supports IrDA version 1.0 (up to 115.2 kbit/s) Standard modem interface or infrared IrDA encoder/decoder interface Enhanced Sleep mode and low power feature Modem control functions (CTS, RTS, DSR, DTR, RI, CD) ...
Page 3
... NXP Semiconductors 4. Block diagram SC16C850SV AD0 to AD7 IOR IOW RESET LLA CS LOWPWR INTERRUPT INT Fig 1. Block diagram of SC16C850SV SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface DATA BUS AND CONTROL LOGIC REGISTER SELECT LOGIC ...
Page 4
... NXP Semiconductors 5. Pinning information 5.1 Pinning Fig 2. 5.2 Pin description Table 2. Pin description Symbol Pin Type Description AD0 29 I/O Address and Data bus (bidirectional). These pins are the 8-bit multiplexed data bus and address bus for transferring information to or from the controlling CPU. AD0 is the least ...
Page 5
... NXP Semiconductors Table 2. Pin description …continued Symbol Pin Type Description INT 20 O Interrupt output. The output state is defined by the user through the software setting of MCR[5]. INT is set to the active mode when MCR[5] is set to a logic 0. INT is set to the open-source mode when MCR[3] is set to a logic 1. See ...
Page 6
... NXP Semiconductors 6. Functional description The SC16C850SV provides serial asynchronous receive data synchronization, parallel-to-serial and serial-to-parallel data conversions for both the transmitter and receiver sections. These functions are necessary for converting the serial data stream into parallel data that is required with digital data systems. Synchronization for the serial data stream is accomplished by adding start and stop bits to the transmit data to form a data character (character orientated protocol) ...
Page 7
... NXP Semiconductors 6.2 Extended mode (128-byte FIFO) The device is in the extended mode when any of these four registers contains any value other than 0: FLWCNTH, FLWCNTL, TXINTLVL, RXINTLVL. 6.3 Internal registers The SC16C850SV provides a set of 25 internal registers for monitoring and controlling the functions of the UART ...
Page 8
... NXP Semiconductors [2] These registers are accessible only when LCR[ logic 1. [3] Second special registers are accessible only when EFCR[ [4] Enhanced feature registers are only accessible when LCR = 0xBF. [5] First extra feature registers are only accessible when EFCR[2:1] = 01b. [6] Second extra feature registers are only accessible when EFCR[2:1] = 10b. ...
Page 9
... NXP Semiconductors When AFCR1[2] is set to 1, then the function of CTS pin is mapped to the DSR pin, and the function of RTS is mapped to DTR pin. DSR and DTR pins will behave as described above for CTS and RTS. With the automatic hardware flow control function enabled, an interrupt is generated when the receive FIFO reaches the programmed trigger level ...
Page 10
... NXP Semiconductors In the event that the receive buffer is overfilling, the SC16C850SV automatically sends an Xoff character (when enabled) via the serial TX output to the remote UART. The SC16C850SV sends the Xoff1/Xoff2 characters as soon as the number of received data in the receive FIFO passes the programmed trigger level. To clear this condition, the SC16C850SV will transmit the programmed Xon1/Xon2 characters as soon as the number of characters in the receive FIFO drops below the programmed trigger level ...
Page 11
... NXP Semiconductors 6.9 Programmable baud rate generator The SC16C850SV UART contains a programmable rational baud rate generator that takes any clock input and divides divisor in the range between 1 and (2 SC16C850SV offers the capability of dividing the input frequency by rational divisor. The fractional part of the divisor is controlled by the CLKPRES register in the First Extra Register Set ...
Page 12
... NXP Semiconductors Programming the baud rate generator registers CLKPRES, DLM (MSB) and DLL (LSB) provides a user capability for selecting the desired final baud rate. The example in shows the selectable baud rate table available when using a 1.8432 MHz external clock input with MCR[ SAMPR[1:0] = 00b, and CLKPRES = 0x00. ...
Page 13
... NXP Semiconductors Table 6. Output baud rate (bit/s) 38.4 k 57.6 k 115.2 k 6.10 Loopback mode The internal loopback capability allows on-board diagnostics. In the Loopback mode, the normal modem interface pins are disconnected and reconfigured for loopback internally (see Figure In the Loopback mode, the transmitter output (TX) and the receiver input (RX) are disconnected from their associated interface pins, and instead are connected together internally ...
Page 14
... NXP Semiconductors SC16C850SV AD0 to AD7 DATA BUS IOR AND IOW CONTROL RESET LOGIC LLA REGISTER CS SELECT LOGIC POWER DOWN LOWPWR CONTROL INTERRUPT INT CONTROL LOGIC Fig 6. Internal Loopback mode diagram SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface ...
Page 15
... NXP Semiconductors 6.11 Sleep mode Sleep mode is an enhanced feature of the SC16C850SV UART enabled when EFR[4], the enhanced functions bit, is set and when IER[4] bit is also set. 6.11.1 Conditions to enter Sleep mode Sleep mode is entered when: • Modem input pins are not toggling. ...
Page 16
... NXP Semiconductors 6.13 RS-485 Features 6.13.1 Auto RS-485 RTS control Normally the RTS pin is controlled by MCR bit hardware flow control is enabled, the logic state of the RTS pin is controlled by the hardware flow control circuitry. EFCR2 register bit 4 will take the precedence over the other two modes; once this bit is set, the transmitter will control the state of the RTS pin ...
Page 17
... NXP Semiconductors 6.13.3.2 Auto address detection If Special Character Detect is enabled (EFR[5] is set and the Xoff2 register contains the address byte), the receiver will try to detect an address byte that matches the programmed character in the Xoff2 register. If the received byte is a data byte or an address byte that does not match the programmed character in the Xoff2 register, the receiver will discard these data ...
Page 18
Table 7. SC16C850SV internal registers [ Register Default Bit 7 [2] General register set RHR XX bit THR XX bit IER 00 CTS interrupt 0 1 ...
Page 19
Table 7. SC16C850SV internal registers …continued [ Register Default Bit 7 [6] Enhanced register set EFR 00 Auto CTS Xon1 00 bit Xon2 00 bit 15 1 ...
Page 20
... NXP Semiconductors 7.1 Transmit and Receive Holding Registers (THR and RHR) The serial transmitter section consists of an 8-bit Transmit Holding Register (THR) and Transmit Shift Register (TSR). The status of the THR is provided in the Line Status Register (LSR). Writing to the THR transfers the contents of the data bus (AD7 to AD0) to the transmit FIFO ...
Page 21
... NXP Semiconductors Table 8. Bit Symbol Description 1 IER[1] 0 IER[0] 7.2.1 IER versus transmit/receive FIFO interrupt mode operation When the receive FIFO is enabled (FCR[0] = logic 1), and receive interrupts (IER[0] = logic 1) are enabled, the receive interrupts and register status will reflect the following: • ...
Page 22
... NXP Semiconductors 7.3 FIFO Control Register (FCR) This register is used to enable the FIFOs, clear the FIFOs and set the receive FIFO trigger levels. 7.3.1 FIFO mode Table 9. Bit Symbol 7:6 FCR[7:6] Receive trigger level in 32-byte FIFO mode. 5:4 FCR[5:4] Transmit trigger level in 32-byte FIFO mode. ...
Page 23
... NXP Semiconductors Table 11. FCR[ [1] When RXINTLVL or TXINTLVL or FLWCNTH or FLWCNTL contains any value other than 0x00, receive and transmit trigger levels are set by RXINTLVL, TXINTLVL; see 7.4 Interrupt Status Register (ISR) The SC16C850SV provides six levels of prioritized interrupts to minimize external software interaction. The Interrupt Status Register (ISR) provides the user with six interrupt status bits ...
Page 24
... NXP Semiconductors Table 13. Bit 0 7.5 Line Control Register (LCR) The Line Control Register is used to specify the asynchronous data communication format. The word length, the number of stop bits, and the parity are selected by writing the appropriate bits in this register. Table 14. Bit 7 6 5:3 ...
Page 25
... NXP Semiconductors Table 17. LCR[ 7.6 Modem Control Register (MCR) This register controls the interface with the modem or a peripheral device. Table 18. Bit Symbol 7 MCR[7] 6 MCR[6] 5 MCR[5] 4 MCR[4] 3 MCR[3] 2 MCR[2] 1 MCR[1] 0 MCR[0] SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface ...
Page 26
... NXP Semiconductors Table 19. MCR[ 7.7 Line Status Register (LSR) This register provides the status of data transfers between the SC16C850SV and the CPU. Table 20. Bit Symbol Description 7 LSR[7] 6 LSR[6] 5 LSR[5] 4 LSR[4] 3 LSR[3] 2 LSR[2] 1 LSR[1] SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface ...
Page 27
... NXP Semiconductors Table 20. Bit Symbol Description 0 LSR[0] 7.8 Modem Status Register (MSR) This register shares the same address as EFCR register. This is a read-only register and it provides the current state of the control interface signals from the modem, or other peripheral device to which the SC16C850SV is connected. Four bits of this register are used to indicate the changed information ...
Page 28
... NXP Semiconductors 7.9 Extra Feature Control Register (EFCR) This is a write-only register, and it allows the software access to these registers: First Extra Register Set, Second Extra Register Set, Transmit FIFO Level Counter (TXLVLCNT), and Receive FIFO Level Counter (RXLVLCNT). Table 22. Bit 7:3 ...
Page 29
... NXP Semiconductors 7.14 Enhanced Feature Register (EFR) Enhanced features are enabled or disabled using this register. Bit 0 through bit 4 provide single or dual character software flow control selection. When the Xon1 and Xon2 and/or Xoff1 and Xoff2 modes are selected, the double 8-bit words are concatenated into two sequential numbers ...
Page 30
... NXP Semiconductors Table 24. Cont [1] When using a software flow control the Xon/Xoff characters cannot be used for data transfer. 7.15 Transmit Interrupt Level register (TXINTLVL) This 8-bit register is used store the transmit FIFO trigger levels used for interrupt generation. Trigger levels from 1 to 128 can be programmed with a granularity of 1. ...
Page 31
... NXP Semiconductors [1] For 32-byte FIFO mode, refer to 7.17 Flow Control Trigger Level High (FLWCNTH) This 8-bit register is used to store the receive FIFO high threshold levels to start/stop transmission during hardware/software flow control. register bit settings; see Table 27. Bit 7:0 [1] For 32-byte FIFO mode, refer to 7 ...
Page 32
... NXP Semiconductors 7.20 Sampling rate (SAMPR) Bit 1 and bit 0 of this register program the device’s sampling rate. Table 30. Bit 7:2 1:0 7.21 RS-485 turn-around time delay (RS485TIME) The value in this register controls the turn-around time of the external line transceiver in bit time. In automatic 9-bit mode, the RTS or DTR pin is used to control the direction of the line driver, after the last bit of data has been shifted out of the transmit shift register the UART will count down the value in this register ...
Page 33
... NXP Semiconductors Table 32. Bit 1 0 [1] It takes 4 XTAL1 clocks to reset the device. 7.23 Advanced Feature Control Register 2 (AFCR2) Table 33. Bit 7 SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface Advanced Feature Control Register 1 bits description ...
Page 34
... NXP Semiconductors 7.24 SC16C850SV external reset condition and software reset These two reset methods are identical and will reset the internal registers as indicated in Table 34. Table 34. Register IER FCR ISR LCR MCR LSR MSR EFCR SPR DLL DLM TXLVLCNT RXLVLCNT EFR Xon1 ...
Page 35
... NXP Semiconductors 8. Limiting values Table 36. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol amb T stg P /pack total power dissipation per tot [1] V should not exceed 2 Static characteristics Table 37. amb Symbol V IL(clk) V IH(clk LIL I LIH I L(clk DD(sleep) I DD(lp) ...
Page 36
... NXP Semiconductors 10. Dynamic characteristics Table 38. Dynamic characteristics + 1. 1.95 V; unless otherwise specified. amb DD Symbol Parameter f frequency on pin XTAL1 XTAL1 t delay time from CS to LLA HIGH d(CS-LLAH) t set-up time from address to LLA HIGH su(A-LLAH) t LLA pulse width time w(LLA) t address hold time after LLA HIGH ...
Page 37
... NXP Semiconductors 10.1 Timing diagrams AD7 to AD0 CS LLA IOW Fig 7. General write timing AD7 to AD0 CS LLA IOR Fig 8. General read timing SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface upper address lower address t su(A-LLAH) ...
Page 38
... NXP Semiconductors IOW RTS change of state DTR CD CTS DSR INT IOR RI Fig 9. Modem input/output timing external clock 1 -------------- - f = XTAL1 t w clk Fig 10. External clock timing SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface ...
Page 39
... NXP Semiconductors RX INT IOR Fig 11. Receive timing TX INT active IOW Fig 12. Transmit timing SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface start bit data bits ( data bits 6 data bits 7 data bits 16 baud rate clock ...
Page 40
... NXP Semiconductors IrDA TX data Fig 13. Infrared transmit timing IrDA RX data RX data Fig 14. Infrared receive timing SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface start TX data bit time bit time start All information provided in this document is subject to legal disclaimers. ...
Page 41
... NXP Semiconductors 11. Package outline HVQFN32: plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 0.85 mm terminal 1 index area terminal 1 index area 32 DIMENSIONS (mm are the original dimensions) (1) A UNIT max. 0.05 0. 0.2 0.00 0.18 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. ...
Page 42
... NXP Semiconductors 12. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description”. 12.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits ...
Page 43
... NXP Semiconductors 12.4 Reflow soldering Key characteristics in reflow soldering are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see reducing the process window • Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board • ...
Page 44
... NXP Semiconductors Fig 16. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description”. 13. Abbreviations Table 41. Acronym CMOS CPU FIFO IrDA ISDN LSB MSB PCB RoHS UART VLIO SC16C850SV Product data sheet ...
Page 45
... NXP Semiconductors 14. Revision history Table 42. Revision history Document ID Release date SC16C850SV v.2 20110322 • Modifications: Table 37 “Static – V IL(clk) – V IH(clk) – – – Added (new) SC16C850SV v.1 20080708 SC16C850SV Product data sheet Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface ...
Page 46
... In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or ...
Page 47
... Single UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface NXP Semiconductors’ specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors’ ...
Page 48
... NXP Semiconductors 17. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Functional description . . . . . . . . . . . . . . . . . . . 6 6.1 UART selection 6.2 Extended mode (128-byte FIFO 6.3 Internal registers . . . . . . . . . . . . . . . . . . . . . . . . 7 6.4 FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.4.1 32-byte FIFO mode ...