PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 163

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

10.2
1997 Microchip Technology Inc.
Control Register
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Register 10-1: TRISE Register
IBF: Input Buffer Full Status bit
1 = A word has been received and waiting to be read by the CPU
0 = No word has been received
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
IBOV: Input Buffer Overflow Detect bit (in microprocessor mode)
1 = A write occurred when a previously input word has not been read
0 = No overflow occurred
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel slave port mode
0 = General purpose I/O mode
Unimplemented: Read as '0'
TRISE2: RE2 direction control bit
1 = Input
0 = Output
TRISE1: RE1 direction control bit
1 = Input
0 = Output
TRISE0: RE0 direction control bit
1 = Input
0 = Output
bit 7
Legend
R = Readable bit
U = Unimplemented bit, read as ‘0’
R-0
IBF
(must be cleared in software)
OBF
R-0
Section 10. Parallel Slave Port
R/W-0
IBOV
W = Writable bit
PSPMODE
R/W-0
- n = Value at POR reset
U-0
—
TRISE2
R/W-1
TRISE1
R/W-1
DS31010A-page 10-3
bit 0
TRISE0
R/W-1
10