參數(shù)資料
型號: P87C51MB2
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family with extended memory
中文描述: 80C51的8位微控制器系列擴(kuò)展內(nèi)存
文件頁數(shù): 25/34頁
文件大?。?/td> 394K
代理商: P87C51MB2
2001 Apr 06
25
Philips Semiconductors
Preliminary specification
P87C51MB2/P87C51MC2
80C51 8-bit microcontroller family with extended memory
64KB/96KB OTP with 2KB/3KB RAM
Figure 4: External Data Memory Read Cycle (Extended Memory Cycle)
Figure 5: External Data Memory Write Cycle (Non-Extended Memory Cycle)
t
LLWL
t
RLRH
t
WHLH
t
RLAZ
t
RHDX
t
LLAX
t
AVLL
t
RHDZ
ALE
PSEN
RD
PORT 0
PORT 2
A0-A7
DATA in
A8-A15
A0-A7 FROM PCL
INSTR IN
A16-A22,P2.7
t
LLDV
t
AVDV1
t
AVWL1
t
RLDV
t
LLWL
t
WLWH
t
WHLH
t
QVWX
t
QVWH
t
LLAX
t
AVLL
t
AVWL
t
WHQX
ALE
PSEN
WR
PORT 0
PORT 2
A0-A7
DATA OUT
P2.0-P2.7 OR A8-A15
A0-A7 FROM PCL
INSTR IN
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