PIC16F877A-I/P Microchip Technology, PIC16F877A-I/P Datasheet - Page 240

• Manufacturer Part Number: PIC16F877A-I/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877A-I/P

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 40-DIP (0.600", 15.24mm)
• 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: 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: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 368 B
• Interface Type: CCP/I2C/MSSP/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: Through Hole
• 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
• 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
• Other names: PIC16F877AI/P

PICmicro MID-RANGE MCU FAMILY
15.4.1.2
DS31015A-page 15-20
SDA
SCL
SSPIF
BF (SSPSTAT<0>)
SSPOV (SSPCON<6>)
S
Reception
A7 A6 A5 A4 A3 A2 A1
1
2
Receiving Address
3
When the R/W bit of the address byte is clear and an address match occurs, the R/W bit of the
SSPSTAT register is cleared. The received address is loaded into the SSPBUF register.
When the address byte overflow condition exists, then no acknowledge (ACK) pulse is given. An
overflow condition is defined as either the BF bit (SSPSTAT<0>) is set or the SSPOV bit
(SSPCON<6>) is set. So when a byte is received, with these conditions, and attempts to move
from the SSPSR register to the SSPBUF register, no acknowledge pulse is given.
An SSP interrupt is generated for each data transfer byte. The SSPIF flag bit must be cleared in
software. The SSPSTAT register is used to determine the status of the receive byte.
Figure 15-8:
4
5
6
7
R/W=0
8
I
ACK
2
9
C Waveforms for Reception (7-bit Address)
D7
1
D6
2
Cleared in software
SSPBUF register is read
Receiving Data
D5
3
D4
Bit SSPOV is set because the SSPBUF register is still full.
4
D3
5
D2
6
D1
7
D0
8
ACK
9
D7
1
D6
2
D5
Receiving Data
3
D4
4
ACK is not sent.
D3
1997 Microchip Technology Inc.
5
D2
6
D1
7
D0
8
ACK
9
transfer
Bus Master
terminates
P