PIC17C756A MICROCHIP [Microchip Technology], PIC17C756A Datasheet - Page 160

• Manufacturer Part Number: PIC17C756A
• Description: High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC17C7XX
FIGURE 15-25:
DS30289B-page 160
SDA = Current Data bit
Count SCL High Time
= Num_Clocks + 1
Num_Clocks = 0,
Start BRG Count,
MASTER TRANSMIT FLOW CHART
SSPADD<6:0>,
SSPADD<6:0>,
Force SCL = 0
Load BRG with
Load BRG with
Write SSPBUF
Force SCL = 1
Num_Clocks
Num_Clocks
Stop BRG,
Idle Mode
SCL = 1?
Data bit?
Rollover?
Rollover?
SDA =
BF = 1
BRG
BRG
= 8?
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
(Clock Arbitration)
Reset BRG
SCL = 0?
Yes
Set BCLIF, Hold Prescale Off,
Bus Collision Detected
Clear XMIT Enable
No
Data bit?
SDA =
Yes
No
(Clock Arbitration)
ACKSTAT bit (SSPCON2<6>)
Read SDA and place into
2000 Microchip Technology Inc.
Slave can drive ACK,
Count High Time
SSPADD<6:0>,
Release SDA so
SSPADD<6:0>,
start BRG count
Force SCL = 1,
Load BRG with
Force SCL = 0,
Load BRG with
Force BF = 0
Set SSPIF
Stop BRG
Rollover?
Rollover?
SCL = 1?
BRG
Yes
Yes
Yes
No
No
No