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PIC16F72/ML 数据表(PDF) 52 Page - Microchip Technology

部件名 PIC16F72/ML
功能描述  28-Pin, 8-Bit CMOS FLASH MCU with A/D Converter
PDF  136 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16F72/ML 数据表(HTML) 52 Page - Microchip Technology

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PIC16F72
DS39597B-page 50
 2002 Microchip Technology Inc.
FIGURE 9-6:
I2C WAVEFORMS FOR RECEPTION (7-BIT ADDRESS)
FIGURE 9-7:
I2C WAVEFORMS FOR TRANSMISSION (7-BIT ADDRESS)
P
9
8
7
6
5
D0
D1
D2
D3
D4
D5
D6
D7
S
A7 A6 A5 A4 A3 A2 A1
SDA
SCL
12
3
4
5
6
7
8
9
12
3
4
56
7
89
12
3
4
Bus Master
terminates
transfer
Bit SSPOV is set because the SSPBUF register is still full.
Cleared in software
SSPBUF register is read
ACK
Receiving Data
Receiving Data
D0
D1
D2
D3
D4
D5
D6
D7
ACK
R/W = 0
Receiving Address
SSPIF (PIR1<3>)
BF (SSPSTAT<0>)
SSPOV (SSPCON<6>)
ACK
ACK is not sent.
SDA
SCL
SSPIF (PIR1<3>)
BF (SSPSTAT<0>)
CKP (SSPCON<4>)
A7
A6
A5
A4
A3
A2
A1
ACK
D7
D6
D5
D4
D3
D2
D1
D0
ACK
Transmitting Data
R/W = 1
Receiving Address
1
2
3
4
56
789
123
4
5
67
8
9
P
Cleared in software
SSPBUF is written in software
From SSP Interrupt
Service Routine
Set bit after writing to SSPBUF
S
Data is
sampled
SCL held low
while CPU
responds to SSPIF
(the SSPBUF must be written to
before the CKP bit can be set)



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