參數(shù)資料
型號: P87C557E8
廠商: NXP Semiconductors N.V.
元件分類: 8位微控制器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 75/84頁
文件大?。?/td> 322K
代理商: P87C557E8
1999 Mar 12
75
Philips Semiconductors
Product specification
8-bit microcontroller
P8xC557E8
Table 86
EPROM programming modes
Notes
1.
Each programming pulse is:
a) LOW for 50
±
5
μ
s.
b) HIGH for at least 5
μ
s.
ALE/PROG receives 5 programming pulses while V
PP
is held at 12.75
±
0.25 V.
2.
MODE
RSTIN
PSEN
ALE/
PROG
EA/V
PP
P2.7
P2.6
P3.7
P3.6
P3.3
Read Signature
Program code data
Verify code data
Program Encryption table
Program Lock bit 1
Program Lock bit 2
Program Lock bit 3
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
LOW
(1)
HIGH
LOW
(1)
LOW
(1)
LOW
(1)
LOW
(1)
HIGH
V
PP(2)
HIGH
V
PP(2)
V
PP(2)
V
PP(2)
V
PP(2)
LOW
HIGH
LOW
HIGH
HIGH
HIGH
LOW
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
LOW
HIGH
HIGH
HIGH
HIGH
LOW
LOW
LOW
HIGH
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
HIGH
HIGH
HIGH
Fig.32 Programming configuration.
handbook, full pagewidth
P8xCE560
P1
XTAL2
4 to 6 MHz
A0 to A7
VSS
XTAL1
VDD
P0
P2.7
P2.6
P2.0 to P2.5
PGM data
A8 to A13
+
5 V
ALE/PROG
PSEN
MBH090
EA/VPP
HIGH
LOW
LOW
+12.75 V
5 50
μ
s - PULSES TO GROUND
P3.4
A14
P3.5
A15
RST
P3.6
P3.7
HIGH
HIGH
HIGH
P3.3
HIGH
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