參數(shù)資料
型號(hào): 87C451
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, expanded I/O
中文描述: 80C51的8位單片機(jī)系列4K/128檢察官辦公室/光盤/無(wú)ROM,擴(kuò)展的I / O
文件頁(yè)數(shù): 20/22頁(yè)
文件大小: 162K
代理商: 87C451
Philips Semiconductors
Product specification
80C451/83C451/87C451
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, expanded I/O
1998 May 01
20
EPROM PROGRAMMING AND VERIFICATION CHARACTERISTICS
T
amb
= 21
°
C to +27
°
C, V
CC
= 5V
±
10%, V
SS
= 0V (See Figure 21)
SYMBOL
PARAMETER
MIN
MAX
UNIT
V
PP
Programming supply voltage
12.5
13.0
V
I
PP
Programming supply current
50
mA
1/t
CLCL
Oscillator frequency
4
6
MHz
t
AVGL
Address setup to PROG low
48t
CLCL
t
GHAX
Address hold after PROG
48t
CLCL
t
DVGL
Data setup to PROG low
48t
CLCL
t
GHDX
Data hold after PROG
48t
CLCL
t
EHSH
P2.7 (ENABLE) high to V
PP
48t
CLCL
t
SHGL
V
PP
setup to PROG low
10
μ
s
t
GHSL
V
PP
hold after PROG
10
μ
s
t
GLGH
PROG width
90
110
μ
s
t
AVQV
Address to data valid
48t
CLCL
t
ELQZ
ENABLE low to data valid
48t
CLCL
t
EHQZ
Data float after ENABLE
0
48t
CLCL
t
GHGL
PROG high to PROG low
10
μ
s
PROGRAMMING
*
VERIFICATION
*
ADDRESS
ADDRESS
DATA IN
DATA OUT
LOGIC 1
LOGIC 1
LOGIC 0
t
AVQV
t
EHQZ
t
ELQV
t
SHGL
t
GHSL
t
GLGH
t
GHGL
t
AVGL
t
GHAX
t
DVGL
t
GHDX
P1.0–P1.7
P2.0–P2.4
PORT 0
ALE/PROG
EA/V
PP
P2.7
ENABLE
SU00020
t
EHSH
NOTE:
*
FOR PROGRAMMING VERIFICATION SEE FIGURE 18.
FOR VERIFICATION CONDITIONS SEE FIGURE 20.
Figure 21. EPROM Programming and Verification
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