參數(shù)資料
型號(hào)： MC7455ARX1000LF
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1000 MHz, RISC PROCESSOR, CBGA483
封裝： 29 X 29 MM, 1.27 MM PITCH, CERAMIC, BGA-483
文件頁(yè)數(shù)： 50/68頁(yè)
文件大?。?/td> 1609K
代理商： MC7455ARX1000LF
54
MPC7455 RISC Microprocessor Hardware Specifications
MOTOROLA
System Design Information
Figure 26. JTAG Interface Connection
HRESET
From Target
Board Sources
HRESET
13
SRESET
NC
11
VDD_SENSE
6
5 1
15
2 k
10 k
10 k
10 k
OVDD
CHKSTP_IN
8
TMS
TDO
TDI
TCK
TMS
TDO
TDI
TCK
9
1
3
4
TRST
7
16
2
10
12
(if any)
COP
He
a
d
e
r
14 2
Key
QACK
OVDD
10 k
OVDD
TRST
10 k
OVDD
10 k
10 k
QACK
CHKSTP_OUT
3
13
9
5
1
6
10
2
15
11
7
16
12
8
4
KEY
No Pin
COP Connector
Physical Pin Out
10 k
4
OVDD
1
2 k
3
0
5
Notes:
1. RUN/STOP, normally found on pin 5 of the COP header, is not implemented on the MPC7455. Con
pin 5 of the COP header to OVDD with a 10-k pull-up resistor.
2. Key location; pin 14 is not physically present on the COP header.
3. Component not populated. Populate only if debug tool does not drive QACK.
4. Populate only if debug tool uses an open-drain type output and does not actively de-assert QACK
5. If the JTAG interface is implemented, connect HRESET from the target source to TRST from the C
header though an AND gate to TRST of the part. If the JTAG interface is not implemented, con
HRESET from the target source to TRST of the part through a 0-
isolation reisistor.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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