UART, DUAL, SMD, 68692C1, PLCC44

SCC68692C1A44

Manufacturer Part NumberSCC68692C1A44
DescriptionUART, DUAL, SMD, 68692C1, PLCC44
ManufacturerNXP Semiconductors
SCC68692C1A44 datasheet
 


Specifications of SCC68692C1A44

No. Of Channels2Uart FeaturesQuadruple Buffered Receiver Data Register
Supply Voltage Range4.5V To 5.5VOperating Temperature Range0°C To +70°C
Digital Ic Case StylePLCCNo. Of Pins44
Data Rate115.2KilobaudRohs CompliantYes
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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SCC68692
Dual asynchronous receiver/transmitter
(DUART)
Product data
Supersedes data of 1998 Sep 04
INTEGRATED CIRCUITS
2004 Mar 03

SCC68692C1A44 Summary of contents

  • Page 1

    SCC68692 Dual asynchronous receiver/transmitter (DUART) Product data Supersedes data of 1998 Sep 04 INTEGRATED CIRCUITS 2004 Mar 03 ...

  • Page 2

    ... Detects break which originates in the middle of a character On-chip crystal oscillator Power down mode Receiver timeout mode Commercial and Industrial temperature range versions TTL compatible Single +5 V power supply COMMERCIAL INDUSTRIAL + –40 to +85 C amb amb SCC68692C1N40 SCC68692E1N40 SCC68692C1A44 SCC68692E1A44 2 Product data SCC68692 DWG # SOT129-1 SOT187-2 ...

  • Page 3

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) PIN CONFIGURATIONS A1 1 IP3 IP1 IP0 7 R/WN 8 DTACKN 9 DIP RxDB 10 TxDB 11 OP1 12 OP3 13 OP5 14 OP7 15 D1 ...

  • Page 4

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) BLOCK DIAGRAM 8 D0–D7 BUS BUFFER OPERATION CONTROL R/WN DTACKN ADDRESS DECODE CSN 4 A1–A4 R/W CONTROL RESETN INTERRUPT CONTROL INTRN IMR ISR IACKN IVR TIMING BAUD RATE GENERATOR CLOCK SELECTORS COUNTER/ TIMER X1/CLK ...

  • Page 5

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) PIN DESCRIPTION SYMBOL PIN NO. TYPE D0–D7 25,16,24,17 I/O Data Bus: Bidirectional 3-State data bus used to transfer commands, data and status between the DUART 23,18,22,19 and the CPU the least significant ...

  • Page 6

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) DC ELECTRICAL CHARACTERISTICS SYMBOL SYMBOL PARAMETER PARAMETER V Input LOW voltage Input HIGH voltage (except X1/CLK Input HIGH voltage (except X1/CLK Input HIGH voltage (X1/CLK) IH ...

  • Page 7

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART CHARACTERISTICS SYMBOL SYMBOL FIGURE FIGURE Reset Timing t 1 RESET pulse width RES Bus Timing5 t 4,5,6 A1–A4 set-up time to CSN LOW AS t 4,5,6 A1–A4 hold time from ...

  • Page 8

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) 3. Typical values are at +25 C, typical supply voltages, and typical processing parameters. 4. Test conditions for outputs 150 pF, except interrupt outputs. Test condition for interrupt outputs ...

  • Page 9

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) Input Port The inputs to this unlatched 6-bit port can be read by the CPU by performing a read operation at address H’D’. A HIGH input results in a logic 1 while a LOW ...

  • Page 10

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) Receiver FIFO The RHR consists of a First-In-First-Out (FIFO) stack with a capacity of three characters. Data is loaded from the receive shift register into the topmost empty position of the FIFO. The RxRDY ...

  • Page 11

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) MR1A[2]/MR1B[ transmits a zero in the A/D bit position, which identifies the corresponding data bits as data while MR1A[2]/MR1B[ transmits a one in the A/D bit position, which identifies the ...

  • Page 12

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) MR1A[4:3| – Channel A Parity Mode Select If ‘with parity’ or ‘force parity’ is selected a parity bit is added to the transmitted character and the receiver performs a parity check on incoming data ...

  • Page 13

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) Table 2. Register Bit Formats BIT 7 BIT 6 RxRTS RxINT CONTROL SELECT MR1A MR1A MR1B RxRDY 1 = Yes 1 = FFULL NOTE: *In block error mode, block ...

  • Page 14

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) Table 2. Register Bit Formats (Continued) BIT 7 BIT 6 DELTA DELTA IP3 IP2 IPCR Yes 1 = Yes BIT 7 BIT 6 IN PORT DELTA ...

  • Page 15

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) CSRA – Channel A Clock Select Register CSRA[7:4] – Channel A Receiver Clock Select This field selects the baud rate clock for the Channel A transmitter. The field definition is shown in Table 3. ...

  • Page 16

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) SRA – Channel A Status Register SRA[7] – Channel A Received Break This bit indicates that an all zero character of the programmed length has been received without a stop bit. Only a single ...

  • Page 17

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) OPCR[1:0] – OP2 Output Select This field programs the OP2 output to provide one of the following: 00 The complement of OPR[2]. 01 The 16X clock for the Channel A transmitter. This is the ...

  • Page 18

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) ISR[6] – Channel B Change In Break This bit, when set, indicates that the Channel B receiver has detected the beginning or the end of a received break reset when the CPU ...

  • Page 19

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) RESET X1/CLK A1–A4 RWN CSN D0– DTACKN NOTE: DACKN low requires two rising edges of X1 clock after CSN is low. X1/CLK A1–A4 RWN CSN D0–D7 DTACKN NOTE: DACKN low requires two ...

  • Page 20

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) X1/CLK INTRN IACKN D0–D7 DTACKN NOTE: DACKN low requires two rising edges of X1 clock after CSN is low. CSN IP0–IP5 CSN OP0–OP7 NOTES: 1. INTRN or OP3 – OP7 when used as interrupt ...

  • Page 21

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) t CLK t CTC X1/CLK CTCLK RxC TxC 24pF FOR C L 3.6864MHz NOTE: C1 AND C2 SHOULD BE BASED ON MANUFACTURER’S SPECIFICATION. PARASITIC CAPACITANCE SHOULD ...

  • Page 22

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) RxC (1X INPUT) RxD TxD D1 TRANSMITTER ENABLED TxRDY (SR2) CSN (WRITE CTSN (IP0) 2 RTSN (OP0) OPR( NOTES: 1. Timing shown for MR2( Timing shown ...

  • Page 23

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) MASTER STATION ADD#1 TxD TRANSMITTER ENABLED TxRDY (SR2) CSN (WRITE) MR1(4+ ADD#1 MR1( MR1( PERIPHERAL STATION BIT 9 0 ADD#1 1 RxD RECEIVER ENABLED RxRDY (SR0) CSN ...

  • Page 24

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) controlled by the receiver and the transmitter at the same time is allowed, but would usually be incompatible. RTS can also be controlled by the commands 1000 and 1001 in the command register. RTS ...

  • Page 25

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) DIP40: plastic dual in-line package; 40 leads (600 mil) 2004 Mar 03 25 Product data SCC68692 SOT129-1 ...

  • Page 26

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) PLCC44: plastic leaded chip carrier; 44 leads 2004 Mar 03 26 Product data SCC68692 SOT187-2 ...

  • Page 27

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) REVISION HISTORY Rev Date Description _3 20040303 Product data (9397 750 13001). Supersedes data of 1998 Sep 04 (9397 750 04361). Modifications: Remove all references to cerdip package offering (SCC68692C1F40 and SCC68692E1F40 parts are ...

  • Page 28

    Philips Semiconductors Dual asynchronous receiver/transmitter (DUART) Data sheet status Product [1] Level Data sheet status [2] [3] status I Objective data Development II Preliminary data Qualification III Product data Production [1] Please consult the most recently issued data sheet before ...