PIC12F1822T-I/SL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC12F1822T-I/SL

8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC12F/LF1822/16F/LF1823

The I2C interface supports the following modes and

features:

• Master mode

• Slave mode

• Byte NACKing (Slave mode)

• Limited Multi-master support

• 7-bit and 10-bit addressing

• Start and Stop interrupts

• Interrupt masking

• Clock stretching

• Bus collision detection

• General call address matching

• Address masking

• Address Hold and Data Hold modes

• Selectable SDA hold times

Figure 24-2 is a block diagram of the I2C interface mod-

ule in Master mode. Figure 24-3 is a diagram of the I2C

interface module in Slave mode.

FIGURE 24-2:

MSSP1 BLOCK DIAGRAM (I2C™ MASTER MODE)

SDA

SCL

SDA in

Read

Internal

data bus

Write

SSP1BUF

SSP1SR

MSb

Shift

Clock

LSb

Start bit, Stop bit,

Acknowledge

Generate (SSP1CON2)

[SSP1M 3:0]

Baud rate

generator

(SSP1ADD)

SCL in

Bus Collision

Start bit detect,

Stop bit detect

Write collision detect

Clock arbitration

State counter for

end of XMIT/RCV

Address Match detect

Set/Reset: S, P, SSP1STAT, WCOL, SSP1OV

Reset SEN, PEN (SSP1CON2)

Set SSP1IF, BCL1IF

DS41413A-page 226

Preliminary

 2010 Microchip Technology Inc.

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