MC68HC908GP32CB Freescale Semiconductor, MC68HC908GP32CB Datasheet - Page 101

• Manufacturer Part Number: MC68HC908GP32CB
• Description: IC MCU 32K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K 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 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 9
External Interrupt (IRQ)
9.1 Introduction
The IRQ (external interrupt) module provides a maskable interrupt input.
9.2 Features
Features of the IRQ module include:
9.3 Functional Description
A low level applied to the external interrupt request (IRQ) pin can latch a CPU interrupt request.
shows the structure of the IRQ module.
Freescale Semiconductor
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A dedicated external interrupt pin IRQ
IRQ interrupt control bits
Programmable edge-only or edge and level interrupt sensitivity
Automatic interrupt acknowledge
Internal pullup device
IRQ
IRQ VECTOR
DECODER
FETCH
V
DD
RESET
ACK
INTERNAL
PULLUP
DEVICE
Figure 9-1. IRQ Module Block Diagram
V
MODE
DD
MC68HC908GP32 Data Sheet, Rev. 10
IRQ LATCH
D
NOTE: On FLASH devices, high-voltage disables FLASH block protection.
CK
CLR
Q
IMASK
SYNCHRONIZER
VOLTAGE
DETECT
HIGH
IRQF
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ
INTERRUPT
REQUEST
TO MONITOR
MODE SELECT
(NOTE)
Figure 9-1
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