PIC16F873-04I/SO Microchip Technology, PIC16F873-04I/SO Datasheet - Page 304

• Manufacturer Part Number: PIC16F873-04I/SO
• Description: IC MCU FLASH 4KX14 EE 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F873-04I/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PICmicro MID-RANGE MCU FAMILY
17.4.5
DS31017A-page 17-28
SDA
SCL
Master Mode
Master mode of operation is supported by interrupt generation on the detection of the START and
STOP conditions. The STOP (P) and START (S) bits are cleared from a reset or when the SSP
module is disabled. Control of the I
with both the S and P bits clear.
In master mode the SCL and SDA lines are manipulated by the SSP hardware.
The following events will cause SSP Interrupt Flag bit, SSPIF, to be set (SSP Interrupt if enabled):
• START condition
• STOP condition
• Data transfer byte transmitted/received
• Acknowledge Transmit
• Repeated Start
Figure 17-17: SSP Block Diagram (I 2 C Master Mode)
SDA in
Bus Collision
SCL in
Read
MSb
Write collision detect
end of XMIT/RCV
Start bit, Stop bit,
State counter for
Clock Arbitration
Start bit detect
Stop bit detect
Acknowledge
Generate
SSPBUF
SSPSR
Preliminary
2
C bus may be taken when the P bit is set, or the bus is idle
LSb
Write
clock
data bus
shift
Internal
Set/Reset, S, P, WCOL (SSPSTAT)
Set SSPIF, BCLIF
Reset ACKSTAT, PEN (SSPCON2)
1997 Microchip Technology Inc.
SSPADD<6:0>
SSPM3:SSPM0
Baud
rate
generator