Intel MCS48 User Manual page 169

ID8048/8748/8035L
AC TIMING SPECIFICATION FOR
PROGRAMMING
T
A
= 25°C ±
5°C,
Vcc =
5V ±
5%,
Vdd =
25V ± 1V
Symbol
Parameter Min.
Max.
Unit
Test Conditions
tAW Address Setup
Time
to
RESET
t
4tcy
tWA Address Hold Time
After
RESET
t
4tcy
tDW
Data
in
Setup Time
to
PROG
t
4tcy
tWD
Data
in
Hold Time
After
PROG
1
4tcy
o
tPH
RESET
Hold Time
to Verify
4tcy
tVDDW
Vdd
4tcy
tVDDH
Vdd
Hold Time
After
PROG
1
tpw
Program
Pulse Width
50
60
ms
tTW
Test
Setup Time
for
Program Mode
4tcy
tWT
Test Hold Time
After
Program Mode
4tcy
tDO Test
to Data Out
Delay
4tcy
tww RESET
Pulse Width
to
Latch Address
4tcy
tr,
tf
Vdd and
PROG
Rise and
Fall
Times
0.5
2.0
MS
tCY
CPU
Operation Cycle
Time
5.0
MS
tRE
RESET
Setup
Time
Before
EA
I. 4tcy
Note:
If
Test
is
high too can be
triqqered
bv
RESET
I
DC
SPECIFICATION
FOR
PROGRAMMING
Ta = 25°C ±
5°C,
Vcc = 5V ±
5%,
Vdd =
25V ± 1V
Symbol Parameter
Min.
Max.
Unit
Test Conditions
Vdoh
Vdd Program
Voltage High
Level
24.0 26.0
V
Vddl
Vdd Voltage
Low
Level
4.75 5.25
V
VPH
PROG
Program Voltage High
Level 21.5
24.5
V
Vp
L
PROG
Voltage
Low
Level
0.2
V
Veah
EA Program
or Verify Voltage
High
Level
21.5 24.5
V 8748
V
EAH1
EA1 Verify
Voltage High
Level
11.4
12.6
V
8048
Veal
EA
Voltage
Low
Level
5.25
V
Idd
Vdd
High Voltage Supply Current 30.0
mA
IPROG
PROG
High
Voltage
Supply Current 16.0
mA
lEA
EA
High Voltage Supply Current 1.0
mA
6-17