MC908SR12CFAE Freescale Semiconductor, MC908SR12CFAE Datasheet - Page 292
![IC MCU 12K FLASH 8MHZ 48-LQFP](/photos/12/45/124574/mc908sr12cfae_sml.jpg)
MC908SR12CFAE
Manufacturer Part Number
MC908SR12CFAE
Description
IC MCU 12K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC908SR12CFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
31
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Multi-Master IIC Interface (MMIIC)
17.2 Introduction
Data Sheet
292
17.9.1
17.9.2
17.9.3
17.9.4
17.9.5
17.9.6
17.9.7
17.10 SMBus Protocol Implementation . . . . . . . . . . . . . . . . . . . . . . 316
The multi-master IIC (MMIIC) interface is a two wire, bidirectional serial
bus which provides a simple, efficient way for data exchange between
devices. The interface is designed for internal serial communication
between the MCU and other IIC devices. It has hardware generated
START and STOP signals; and byte by byte interrupt driven software
algorithm.
This bus is suitable for applications which need frequent
communications over a short distance between a number of devices. It
also provides a flexibility that allows additional devices to be connected
to the bus. The maximum data rate is 100k-bps, and the maximum
communication distance and number of devices that can be connected
is limited by a maximum bus capacitance of 400pF.
This MMIIC interface is also SMBus (System Management Bus) version
1.0 and 1.1 compatible, with hardware cyclic redundancy code (CRC)
generation, making it suitable for smart battery applications.
For connection flexibility, two channels are available:
The two channels are multiplexed; only one channel is active at any one
time.
•
•
Channel 0 — SDA0 and SCL0
Channel 1 — SDA1 and SCL1
Quick Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Send Byte. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Receive Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Write Byte/Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Read Byte/Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Process Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Block Read/Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Multi-Master IIC Interface (MMIIC)
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
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