PIC16F874A-I/L Microchip Technology, PIC16F874A-I/L Datasheet - Page 2

• Manufacturer Part Number: PIC16F874A-I/L
• Description: IC MCU FLASH 4KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874A-I/L

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 44-PLCC
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: I2C/SPI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Data Rom Size: 128 B
• Height: 3.87 mm
• Length: 16.59 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4 V
• Width: 16.59 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: PIC16F874AI/L

PIC16F87XA
2. Module: Flash Program Memory
EXAMPLE 1:
DS80128F-page 2
BCF
NOP
BSF
NOP
NOP
NOP
NOP
NOP
NOP
BSF
To ensure proper reading of data from tables in
Flash
Section 3.5 of the Device Data Sheet, the following
work around is necessary.
INTCON, GIE
EECON1, RD
INTCON, GIE
Program
Memory,
;Disable the interrupts
;This NOP is required for the workaround.
;This initiates program memory read.
;Any instructions here are ignored while program memory is read in the
;second instruction cycle after BSF EECON1, RD.
;These four NOP's are required for the workaround.
;Enable the interrupts
as
described
in
Work around
A software workaround will enable Flash program
memory to function as published. One NOP should
precede and six NOPs should follow the instruction
that sets the read bit.
Replace the required 3-instruction sequence,
shown in Example 3-3 of the Data Sheet, with the
sequence shown in Example 1 (below). The
interrupts should be disabled during this process.
This problem is specific to Rev. B0 and has been
resolved by Rev. B2 of the silicon (date codes later
than 0242xxx).
 2003 Microchip Technology Inc.