MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 97
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MC68HC908AP8CB
Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
Specifications of MC68HC908AP8CB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Chapter 7
System Integration Module (SIM)
7.1 Introduction
This section describes the system integration module (SIM). Together with the CPU, the SIM controls all
MCU activities. A block diagram of the SIM is shown in
input/output (I/O) registers. The SIM is a system state controller that coordinates CPU and exception
timing. The SIM is responsible for:
Table 7-1
Freescale Semiconductor
CGMVCLK, CGMPCLK
•
•
•
•
•
Bus clock generation and control for CPU and peripherals:
–
–
Master reset control, including power-on reset (POR) and COP timeout
Interrupt control:
–
–
–
CPU enable/disable timing
Modular architecture expandable to 128 interrupt sources
Signal Name
CGMXCLK
CGMOUT
PORRST
shows the internal signal names used in this section.
Stop/wait/reset/break entry and recovery
Internal clock control
Acknowledge timing
Arbitration control timing
Vector address generation
ICLK
IRST
R/W
IDB
IAB
Internal oscillator clock
Selected oscillator clock from oscillator module
PLL output and the divided PLL output
CGMPCLK-based or oscillator-based clock output from CGM module
(Bus clock = CGMOUT ÷ 2)
Internal address bus
Internal data bus
Signal from the power-on reset module to the SIM
Internal reset signal
Read/write signal
Table 7-1. Signal Name Conventions
MC68HC908AP Family Data Sheet, Rev. 4
Figure
Description
7-1.
Figure 7-2
is a summary of the SIM
97
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