参数资料
型号: MC56F8347VPY60
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP160
封装: PLASTIC, LQFP-160
文件页数: 91/172页
文件大小: 2620K
代理商: MC56F8347VPY60
Signal Pins
56F8347 Technical Data, Rev.11
Freescale Semiconductor
25
Preliminary
WR
51
L4
Output
In reset,
output is
disabled,
pull-up is
enabled
Write Enable — WR is asserted during external memory
write cycles. When WR is asserted low, pins D0 - D15
become outputs and the device puts data on the bus. When
WR is deasserted high, the external data is latched inside
the external device. When WR is asserted, it qualifies the A0
- A16, PS, and DS pins. WR can be connected directly to the
WE pin of a static RAM.
Depending upon the state of the DRV bit in the EMI bus control
register (BCR), WR is tri-stated when the external bus is
inactive.
Most designs will want to change the DRV state to DRV = 1
instead of using the default setting.
To deactivate the internal pull-up resistor, set the CTRL bit in
the SIM_PUDR register.
PS
(CS0)
(GPIOD8)
53
N6
Output
Input/
Output
In reset,
output is
disabled,
pull-up is
enabled
Program Memory Select — This signal is actually CS0 in
the EMI, which is programmed at reset for compatibility with
the 56F80x PS signal. PS is asserted low for external
program memory access.
Depending upon the state of the DRV bit in the EMI bus control
register (BCR), CS0 is tri-stated when the external bus is
inactive.
CS0 resets to provide the PS function as defined on the
56F80x devices.
Port D GPIO — This GPIO pin can be individually
programmed as an input or output pin.
To deactivate the internal pull-up resistor, clear bit 8 in the
GPIOD_PUR register.
DS
(CS1)
(GPIOD9)
54
L5
Output
Input/
Output
In reset,
output is
disabled,
pull-up is
enabled
Data Memory Select — This signal is actually CS1 in the
EMI, which is programmed at reset for compatibility with the
56F80x DS signal. DS is asserted low for external data
memory access.
Depending upon the state of the DRV bit in the EMI bus
control register (BCR), A0 - A23 and EMI control signals are
tri-stated when the external bus is inactive.
CS1 resets to provide the DS function as defined on the
56F80x devices.
Port D GPIO — This GPIO pin can be individually
programmed as an input or output pin.
To deactivate the internal pull-up resistor, clear bit 9 in the
GPIOD_PUR register.
Table 2-2 Signal and Package Information for the 160-Pin LQFP and MBGA (Continued)
Signal Name
Pin
No.
Ball
No.
Type
State
During
Reset
Signal Description
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MC56F8147VVFE,MC56F8347VVFE
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