mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1242

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Signal Description
49.1.3 Block Diagram
The following is a block diagram of the IRQ module.
49.2 Signal Description
The following table shows the user-accessible signal for the IRQ module.
49.2.1 Detailed Signal Descriptions
This section describes each user-accessible pin.
1242
IRQEDG
1. IRQ — External interrupt input pin
IRQ
This input pin is used to detect either falling edge, or both falling edge and low level
interrupt requests. This input pin can also be used to detect either rising edge, or both
rising edge and high level interrupt requests.
To pullup/pulldown
enable logic for IRQ
Name
IRQ
0
1
S
IRQPE
IRQACK
IRQPDD
RESET
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Figure 49-1. IRQ Block Diagram
Table 49-1. Signal Properties
IRQMOD
V
DD
D
CK
CLR
External interrupt pin
Q
Preliminary
Function
TO INTERNAL
MODULES
WAKE-UP
INPUTS
STOP
SYNCHRO-
SYNCHRO-
BYPASS
IPG_CLK
NIZER
STOP
NIZER
IRQIE
Freescale Semiconductor, Inc.
IRQF
Reset State
input
IRQ
INTERRUPT
REQUEST