MC68HC908AP64CB Freescale Semiconductor, MC68HC908AP64CB Datasheet - Page 97

• Manufacturer Part Number: MC68HC908AP64CB
• Description: IC MCU 64K FLASH 8MHZ 42SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AP64CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, IRSCI, SCI, SPI
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 30
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K 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)
• For Use With: DEMO908AP64E - BOARD DEMO FOR 908AP64DEMO908AP64 - BOARD DEMO FOR 908AP64
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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
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