C8051F341-GQ Silicon Laboratories Inc, C8051F341-GQ Datasheet - Page 103

• Manufacturer Part Number: C8051F341-GQ
• Description: IC 8051 MCU FLASH 32K 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F34xr

Specifications of C8051F341-GQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 48-TQFP, 48-VQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 40
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 20x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 3.25 KB
• Interface Type: I2C/SMBus/SPI/UART/USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 40
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-F34X, KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F340DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 17-ch x 10-bit
• No. Of I/o's: 40
• Ram Memory Size: 2304Byte
• Cpu Speed: 48MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Package: 48TQFP
• Device Core: 8051
• Family Name: C8051F34x
• Maximum Speed: 48 MHz
• Data Rom Size: 128 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 17
• Height: 1 mm
• Length: 7 mm
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Width: 7 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1748 - ADAPTER TOOLSTICK FOR C8051F34X770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1452 - ADAPTER PROGRAM TOOLSTICK F340
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1299

11.3. External Reset
The external RST pin provides a means for external circuitry to force the device into a reset state. Assert-
ing an active-low signal on the RST pin generates a reset; an external pull-up and/or decoupling of the
RST pin may be necessary to avoid erroneous noise-induced resets. See Table 11.1 for complete RST pin
specifications. The PINRSF flag (RSTSRC.0) is set on exit from an external reset.
11.4. Missing Clock Detector Reset
The Missing Clock Detector (MCD) is a one-shot circuit that is triggered by the system clock. If more than
100 µs pass between rising edges on the system clock, the one-shot will time out and generate a reset.
After a MCD reset, the MCDRSF flag (RSTSRC.2) will read ‘1’, signifying the MCD as the reset source;
otherwise, this bit reads ‘0’. Writing a ‘1’ to the MCDRSF bit enables the Missing Clock Detector; writing a
‘0’ disables it. The state of the RST pin is unaffected by this reset.
11.5. Comparator0 Reset
Comparator0 can be configured as a reset source by writing a ‘1’ to the C0RSEF flag (RSTSRC.5).
Comparator0 should be enabled and allowed to settle prior to writing to C0RSEF to prevent any turn-on
chatter on the output from generating an unwanted reset. The Comparator0 reset is active-low: if the
non-inverting input voltage (on CP0+) is less than the inverting input voltage (on CP0-), a system reset is
generated. After a Comparator0 reset, the C0RSEF flag (RSTSRC.5) will read ‘1’ signifying Comparator0
as the reset source; otherwise, this bit reads ‘0’. The state of the RST pin is unaffected by this reset.
11.6. PCA Watchdog Timer Reset
The programmable Watchdog Timer (WDT) function of the Programmable Counter Array (PCA) can be
used to prevent software from running out of control during a system malfunction. The PCA WDT function
can be enabled or disabled by software as described in
page
prevents user software from updating the WDT, a reset is generated and the WDTRSF bit (RSTSRC.5) is
set to ‘1’. The state of the RST pin is unaffected by this reset.
11.7. Flash Error Reset
If a Flash read/write/erase or program read targets an illegal address, a system reset is generated. This
may occur due to any of the following:
•
•
•
•
•
The FERROR bit (RSTSRC.6) is set following a Flash error reset. The state of the RST pin is unaffected by
this reset.
A Flash write or erase is attempted above user code space. This occurs when PSWE is set to “1”, and
a MOVX write operation is attempted above address 0x7FFF (32 kB Flash devices) or 0xFBFF (64 kB
Flash devices).
A Flash read is attempted above user code space. This occurs when a MOVC operation is attempted
above address 0x7FFF (32 kB Flash devices) or 0xFBFF (64 kB Flash devices).
A Program read is attempted above user code space. This occurs when user code attempts to branch
to an address above 0x7FFF (32 kB Flash devices) or 0xFBFF (64 kB Flash devices).
A Flash read, write or erase attempt is restricted due to a Flash security setting (see
“12.3. Security Options” on page
A Flash Write or Erase is attempted when the V
264; the WDT is enabled and clocked by SYSCLK / 12 following any reset. If a system malfunction
C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
109).
Rev. 1.3
DD
monitor is not enabled.
Section “22.3. Watchdog Timer Mode” on
Section
103