PIC16F873-04I/SO Microchip Technology, PIC16F873-04I/SO Datasheet - Page 315

• 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

Figure 17-25: Master Transmit Flowchart
1997 Microchip Technology Inc.
SDA = Current Data bit
count SCL high time
= Num_Clocks + 1
Num_Clocks = 0,
start BRG count,
SSPADD<6:0>,
SSPADD<6:0>,
Load BRG with
Write SSPBUF
Force SCL = 0
Load BRG with
Force SCL = 1
Num_Clocks
Num_Clocks
Stop BRG,
Idle Mode
SCL = 1?
Data bit?
SDA =
rollover?
rollover?
BF = 1
BRG
BRG
= 8?
Yes
Yes
Yes
No
Yes
No
No
No
No
Yes
(Clock Arbitration)
Reset BRG
SCL = 0?
Yes
Set BCLIF, hold prescale off,
Bus collision detected
Clear XMIT enable
No
Preliminary
Data bit?
SDA =
Yes
No
Section 17. MSSP
(Clock Arbitration)
ACKSTAT bit (SSPCON2<6>)
Read SDA and place into
slave can drive ACK,
Release SDA so
SSPADD<6:0>,
SSPADD<6:0>,
start BRG count
Force SCL = 1,
count high time
Force SCL = 0,
Load BRG with
Load BRG with
Force BF = 0
Stop BRG
Set SSPIF
Rollover?
SCL = 1?
rollover?
BRG
Yes
DS31017A-page 17-39
Yes
Yes
No
No
No
17