參數(shù)資料
型號(hào)： 87C529
廠商： NXP Semiconductors N.V.
英文描述： 80C51 9-bit microcontrollers(80C51 9位微控制器)
中文描述： 80C51的8位微控制器（80C51的8位微控制器）
文件頁(yè)數(shù)： 20/26頁(yè)
文件大?。?/td> 266K
代理商： 87C529
Philips Semiconductors
Product specification
87C524/87C528
80C51 8-bit microcontrollers
16K/32K, 512 OTP, I
2
C, watchdog timer
1999 Jul 23
20
Table 7.
Program Lock Bits
PROGRAM LOCK BITS
1,2
LB1
LB2
1
U
U
2
P
U
LB3
U
U
PROTECTION DESCRIPTION
No Program Lock features enabled. (Code verify will still be encrypted by the Encryption Array if programmed.)
MOVC instructions executed from external program memory are disabled from fetching code bytes from
Internal memory, EA is jumped and latched on Reset, and further programming of the EPROM Is disabled.
Same as 2, also verify is disabled.
Same as 3, external execution is disabled. Internal data RAM is not accessible.
3
4
P
P
P
P
U
P
NOTES:
1. P - programmed. U - unprogrammed.
2. Any other combination of the lock bits is not defined.
A0–A7
1
1
1
4–6 MHz
+5 V
PGM DATA
+12.75 V
25 100
μ
s PULSES TO GROUND
0
1
0
A8–A13
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
SS
V
CC
P0
EA/V
PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.5
87C524/8
A14
P3.4
SU00172
Figure 14. Programming Configuration
ALE/PROG:
ALE/PROG:
1
0
1
0
25 PULSES
100
μ
s+10
10
μ
s MIN
SU00018
Figure 15. PROG Waveform
A0–A7
1
1
1
4–6 MHz
+5 V
PGM DATA
1
1
0
0 ENABLE
0
A8–A13
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
SS
V
CC
P0
EA/V
PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.5
87C524/8
A14
P3.4
SU00173
Figure 16. Program Verification
相關(guān)PDF資料
PDF描述
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