參數(shù)資料
型號(hào): P89C538NBBB
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: CMOS single-chip 8-bit microcontrollers with FLASH program memory
中文描述: 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 X 1.75 MM, PLASTIC, SOT-307-2, QFP-44
文件頁數(shù): 20/35頁
文件大?。?/td> 221K
代理商: P89C538NBBB
Philips Semiconductors
Preliminary specification
89C535/89C536/89C538
CMOS single-chip 8-bit microcontrollers
with FLASH program memory
1997 Jun 05
20
t
LLAX
ALE
PSEN
PORT 0
PORT 2
WR
A0–A7
FROM RI OR DPL
DATA OUT
A0–A7 FROM PCL
INSTR IN
P2.0–P2.7 OR A8–A15 FROM DPF
A0–A15 FROM PCH
t
WHLH
t
LLWL
t
WLWH
t
AVLL
t
AVWL
t
QVWX
t
WHQX
t
QVWH
SU00026
Figure 11.
External Data Memory Write Cycle
0
1
2
3
4
5
6
7
8
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE TO SBUF
INPUT DATA
CLEAR RI
VALID
VALID
VALID
VALID
VALID
VALID
VALID
VALID
SET TI
SET RI
t
XLXL
t
QVXH
t
XHQX
t
XHDX
t
XHDV
SU00027
1
2
3
0
4
5
6
7
Figure 12.
Shift Register Mode Timing
V
CC
–0.5
0.45V
0.7V
CC
0.2V
CC
–0.1
t
CHCL
t
CLCL
t
CLCH
t
CLCX
t
CHCX
SU00009
Figure 13.
External Clock Drive
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