56F8357 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
56F8357 Datasheet PDF : 160 Pages
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Freescale Semiconductor, Inc.
Table 2-2 56F8357 Signal and Package Information for the 160-Pin LQFP
Signal Name Pin No. Type
State
During
Reset
Signal Description
CLKO
A0
(GPIOA8)
A1
(GPIOA9)
A2
(GPIOA10)
A3
(GPIOA11)
A4
(GPIOA12)
A5
(GPIOA13)
A6
(GPIOE2)
A7
(GPIOE3)
3
Output Tri-Stated Clock Output — This pin outputs a buffered clock signal.
Using the SIM CLKO Select Register (SIM_CLKOSR), this
pin can be programmed as any of the following: disabled,
CLK_MSTR (system clock), IPBus clock, oscillator output,
prescaler clock and postscaler clock. Other signals are
also available for test purposes.
See Section 6.5.7 for details.
154
Output Tri-stated Address Bus — A0 - A5 specify six of the address lines
for external program or data memory accesses.
Depending upon the state of the DRV bit in the EMI bus
control register (BCR), A0–A5 and EMI control signals are
tri-stated when the external bus is inactive.
Input/
Output
10
11
12
13
Port A GPIO — These six GPIO pins can be individually
programmed as input or output pins.
After reset, these pins default to address bus functionality
and must be programmed as GPIO.
To deactivate the internal pull-up resistor, clear the
appropriate GPIO bit in the GPIOA_PUR register.
Example: GPIOA8, clear bit 8 in the GPIOA_PUR register.
14
17
Output Tri-stated Address Bus — A6 - A7 specify two of the address lines
for external program or data memory accesses.
Depending upon the state of the DRV bit in the EMI bus
control register (BCR), A6–A7 and EMI control signals are
tri-stated when the external bus is inactive.
Schmitt
Input/
18
Output
Input
Port E GPIO — These two GPIO pins can be individually
programmed as input or output pins.
After reset, the default state is Address Bus.
To deactivate the internal pull-up resistor, clear the
appropriate GPIO bit in the GPIOE_PUR register.
Example: GPIOE2, clear bit 2 in the GPIOE_PUR register.
16
56F8357 Technical Data
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Go to: www.freescale.com
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