C8051F314 Silicon Laboratories Inc, C8051F314 Datasheet - Page 222
C8051F314
Manufacturer Part Number
C8051F314
Description
IC 8051 MCU 8K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F31xr
Specifications of C8051F314
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
29
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
336-1153
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F314
Manufacturer:
SILICON
Quantity:
15 000
Company:
Part Number:
C8051F314
Manufacturer:
SILICON
Quantity:
218
Company:
Part Number:
C8051F314
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
C8051F314
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Company:
Part Number:
C8051F314-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F314-GQR
Manufacturer:
ST
Quantity:
15 000
Company:
Part Number:
C8051F314-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
C8051F310/1/2/3/4/5/6/7
19.3. PCA Counter
On “REV A” devices, if the main PCA counter (PCA0H : PCA0L) overflows during the execution phase of a
read-modify-write instruction (bit-wise SETB or CLR, ANL, ORL, XRL) that targets the PCA0CN register,
the CF (Counter Overflow) bit will not be set. An example software work-around is as follows:
This behavior is not present on “REV B” and later devices. Software written for “REV A” devices will run on
“REV B” and later devices without modification.
222
Step 1. Disable global interrupts (EA = 0).
Step 2. Read PCA0L. This will latch the value of PCA0H.
Step 3. Read PCA0H, saving the value.
Step 4. Execute the bit-wise operation on CCFn (for example, CLR CCF0, or CCF0 = 0;).
Step 5. Read PCA0L.
Step 6. Read PCA0H, saving the value.
Step 7. If the value of PCA0H read in Step 3 is 0xFF and the value for PCA0H read in Step 6 is
Step 8. Re-enable interrupts (EA = 1).
0x00, then manually set the CF bit in software (for example, SETB CF, or CF = 1;).
Rev. 1.7