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
GPIOB4
37
Schmitt
Input/
Output
Input
Port B GPIO — These four GPIO pins can be
programmed as input or output pins.
(A20)
Output
Tri-stated Address Bus — A20 - A23 specify one 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), A20–A23 and EMI control signals are
tri-stated when the external bus is inactive.
(prescaler_
Output
Output Clock Outputs — can be used to monitor the
clock)
prescaler_clock, SYS_CLK, SYS_CLK2 or oscillator_clock
GPIOB5
46
on GPIOB4 through GPIOB7, respectively.
(A21)
(SYS_CLK)
After reset, the default state is GPIO.
GPIOB6
47
(A22)
(SYS_CLK2)
GPIOB7
48
(A23)
(oscillator_
clock)
These pins can also be used to extend the external
address bus to its full length or to view any of several
system clocks. In these cases, the GPIO_B_PER can be
used to individually disable the GPIO. The CLKOSR
register in the SIM ( see Section 6.5.7) can then be used
to choose between address and clock functions.
D0
70
Input/
Tri-stated Data Bus — D0 - D6 specify part of the data for external
Output
program or data memory accesses.
Depending upon the state of the DRV bit in the EMI bus
control register (BCR), D0 - D6 and EMI control signals are
tri-stated when the external bus is inactive.
(GPIOF9)
D1
(GPIOF10)
D2
(GPIOF11)
D3
(GPIOF12)
D4
(GPIOF13)
Input/
Output
71
83
86
88
Input
Port F GPIO — These seven GPIO pins can be
individually programmed as input or output pins.
After reset, these pins default to the EMI Data bus
function.
To deactivate the internal pull-up resistor, clear the
appropriate GPIO bit in the GPIOF_PUR register.
Example: GPIOF9, clear bit 9 in the GPIOF_PUR register.
D5
89
(GPIOF14)
D6
90
(GPIOF15)
18
56F8357 Technical Data
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Go to: www.freescale.com
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