PIC16F72-I/SP Microchip Technology Inc., PIC16F72-I/SP Datasheet - Page 52

• Manufacturer Part Number: PIC16F72-I/SP
• Description: 28 PIN, 3.5 KB FLASH, 128 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F72-I/SP

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F72
FIGURE 9-6:
FIGURE 9-7:
DS39597B-page 50
SDA
SCL
SSPIF (PIR1<3>)
BF (SSPSTAT<0>)
CKP (SSPCON<4>)
SDA
SCL
SSPIF (PIR1<3>)
BF (SSPSTAT<0>)
SSPOV (SSPCON<6>)
S
S
A7 A6 A5 A4 A3 A2 A1
1
Receiving Address
A7
2
1
Data is
sampled
3
A6
2
I
I
4
2
2
C WAVEFORMS FOR TRANSMISSION (7-BIT ADDRESS)
C WAVEFORMS FOR RECEPTION (7-BIT ADDRESS)
A5
Receiving Address
3
5
A4
4
6
R/W = 0
7
A3
5
8
A2
6
ACK
9
A1
7
D7
1
D6
R/W = 1
2
8
SSPBUF register is read
Receiving Data
D5
3
Cleared in software
9
ACK
D4
Bit SSPOV is set because the SSPBUF register is still full.
responds to SSPIF
4
while CPU
SCL held low
D3
5
D2
6
D1
7
D7
D0
1
SSPBUF is written in software
8
ACK
D6
9
2
Cleared in software
Set bit after writing to SSPBUF
(the SSPBUF must be written to
before the CKP bit can be set)
D7
1
D5
3
D6
2
D4
4
D5
Receiving Data
3
Transmitting Data
D3
D4
4
5
 2002 Microchip Technology Inc.
ACK is not sent.
D3
D2
5
6
D2
6
From SSP Interrupt
Service Routine
D1
7
D1
7
D0
8
D0
8
ACK
ACK
9
9
Bus Master
transfer
terminates
P
P