MC68HC908GP16CFB Freescale Semiconductor, MC68HC908GP16CFB Datasheet - Page 101

• Manufacturer Part Number: MC68HC908GP16CFB
• Description: MCU 8-BIT 16K FLASH 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP16CFB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 16KB (16K 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: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 9
External Interrupt (IRQ)
9.1 Introduction
This section describes the non-maskable external interrupt (IRQ) input.
9.2 Features
Features include:
9.3 Functional Description
A logic 0 applied to the external interrupt pin can latch a central processor unit (CPU) interrupt request.
Figure 9-1
Freescale Semiconductor
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•
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Dedicated external interrupt pin (IRQ)
Hysteresis buffer
Programmable edge-only or edge- and level-interrupt sensitivity
Automatic interrupt acknowledge
shows the structure of the IRQ module.
IRQ
DECODER
VECTOR
FETCH
ACK
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
V
MODE
DD
Figure 9-1. IRQ Block Diagram
D
CK
LATCH
CLR
IRQ
Q
IMASK
SYNCHRO-
VOLTAGE
DETECT
NIZER
HIGH
IRQF
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ
INTERRUPT
REQUEST
TO MODE
SELECT
LOGIC
101