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PIC16C72-04/SS Datasheet(PDF) 95 Page - Microchip Technology

Part # PIC16C72-04/SS
Description  8-Bit CMOS Microcontrollers with A/D Converter
PDF  288 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16C72-04/SS Datasheet(HTML) 95 Page - Microchip Technology

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© 1997 Microchip Technology Inc.
DS30390E-page 95
PIC16C7X
11.5.1.2
RECEPTION
When the R/W bit of the address byte is clear and an
address match occurs, the R/W bit of the SSPSTAT reg-
ister 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 con-
dition is defined as either bit BF (SSPSTAT<0>) is set
or bit SSPOV (SSPCON<6>) is set.
An SSP interrupt is generated for each data transfer
byte. Flag bit SSPIF (PIR1<3>) must be cleared in soft-
ware. The SSPSTAT register is used to determine the
status of the byte.
FIGURE 11-25: I2C WAVEFORMS FOR RECEPTION (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.
Applicable Devices
72 73 73A 74 74A 76 77



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