參數(shù)資料
型號(hào)： PIC16CR7X
廠商： Microchip Technology Inc.
英文描述： 28/40-Pin, 8-Bit CMOS ROM Microcontrollers
中文描述： 28/40-Pin，8位微控制器的CMOS光盤
文件頁數(shù)： 61/172頁
文件大?。?/td> 1506K
代理商： PIC16CR7X
2007 Microchip Technology Inc.
DS21993C-page 59
PIC16CR7X
9.0
SYNCHRONOUS SERIAL PORT
(SSP) MODULE
9.1
SSP Module Overview
The Synchronous Serial Port (SSP) module is a serial
interface useful for communicating with other periph-
eral or microcontroller devices. These peripheral
devices may be Serial EEPROMs, shift registers,
display drivers, A/D converters, etc. The SSP module
can operate in one of two modes:
Serial Peripheral Interface (SPI)
Inter-Integrated Circuit (I
2
C)
An overview of I
2
C operations and additional informa-
tion on the SSP module can be found in the “
PIC
Mid-Range
MCU
Family
(DS33023).
Refer to Application Note AN578, “
Use of the SSP
Module in the I
2
C
Multi-Master Environment
”
(DS00578).
Reference
Manual
”
9.2
SPI Mode
This section contains register definitions and opera-
tional characteristics of the SPI module. Additional
information on the SPI module can be found in the
“
PIC
Mid-Range MCU Family Reference Manual
”
(DS33023).
SPI mode allows 8 bits of data to be synchronously
transmitted
and
received
accomplish communication, typically three pins are
used:
Serial Data Out (SDO) RC5/SDO
Serial Data In (SDI) RC4/SDI/SDA
Serial Clock (SCK) RC3/SCK/SCL
Additionally, a fourth pin may be used when in a Slave
mode of operation:
Slave Select (SS) RA5/SS/AN4
When initializing the SPI, several options need to be
specified. This is done by programming the appropriate
control bits in the SSPCON register (SSPCON<5:0>)
and SSPSTAT<7:6>. These control bits allow the
following to be specified:
Master mode (SCK is the clock output)
Slave mode (SCK is the clock input)
Clock Polarity (Idle state of SCK)
Clock edge (output data on rising/falling edge of
SCK)
Clock Rate (Master mode only)
Slave Select mode (Slave mode only)
simultaneously.
To
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