參數(shù)資料
型號: UPD44324082F5-E37-EQ2-A
廠商: NEC Corp.
元件分類: DRAM
英文描述: 36M-BIT DDRII SRAM 2-WORD BURST OPERATION
中文描述: 36M條位SRAM的2條DDRII字爆發(fā)運作
文件頁數(shù): 28/40頁
文件大?。?/td> 361K
代理商: UPD44324082F5-E37-EQ2-A
28
Data Sheet M16780EJ3V0DS
μ
PD44324082, 44324092, 44324182, 44324362
Output Pin States of CQ, CQ# and Q
Instructions
Control-Register Status
Output Pin Status
Note
CQ,CQ#
Q
EXTEST
0
Update
Hi-Z
1
Update
Update
IDCODE
0
SRAM
SRAM
1
SRAM
SRAM
SAMPLE-Z
0
Hi-Z
Hi-Z
1
Hi-Z
Hi-Z
SAMPLE
0
SRAM
SRAM
1
SRAM
SRAM
BYPASS
0
SRAM
SRAM
1
SRAM
SRAM
Remark
The output pin statuses during each instruction vary according
to the Control-Register status (value of Boundary Scan
Register, bit no. 109).
There are three statuses:
Update : Contents of the “Update Register” are output to
the output pin (QDR Pad).
SRAM : Contents of the SRAM internal output “SRAM
Output” are output to the output pin (QDR Pad).
Hi-Z : The output pin (QDR Pad) becomes Hi-Z by
controlling of the “Hi-Z JTAG ctrl”.
The Control-Register status is set during Update-DR at the
EXTEST or SAMPLE instruction.
SRAM
CAPTURE
Register
Boundary Scan
Register
Update
Register
QDR
Pad
SRAM
Output
Driver
Hi-Z
JTAG ctrl
Hi-Z
Update
SRAM
Output
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UPD44324082F5-E40-EQ2-A 36M-BIT DDRII SRAM 2-WORD BURST OPERATION
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