參數(shù)資料
型號: M37735EHBXXXFP
廠商: Mitsubishi Electric Corporation
英文描述: PROM VERSION OF M37735EHBXXXFP
中文描述: PROM的版本M37735EHBXXXFP
文件頁數(shù): 10/34頁
文件大?。?/td> 591K
代理商: M37735EHBXXXFP
10
MITSUBISHI MICROCOMPUTERS
M37735EHBXXXFP
M37735EHBFS
PROM VERSION OF M37735MHBXXXFP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
FUNCTION IN EPROM MODE
1M mode (equivalent to the M5M27C101K)
Reading
To read the EPROM, set the
CE
and
OE
pins to a “L” level. Input the
address of the data (A
0
– A
16
) to be read, and the data will be output
to the I/O pins D
0
– D
7
. The data I/O pins will be floating when either
the
CE
or
OE
pins are in the “H” state.
__
__
Programming
Programming must be performed in 8 bits by a byte program. To
program to the EPROM, set the
CE
pin to a “L” level and the
OE
pin to
a “H” level. The CPU will enter the programming mode when 12.5 V
is applied to the V
PP
pin. The address to be programmed to is selected
with pins A
0
– A
, and the data to be programmed is input to pins D
0
___
– D
7
. Set the
PGM
pin to a “L” level to being programming.
Erasing
To erase data on this chip, use an ultraviolet light source with a 2537
Angstrom wave length. The minimum radiation power necessary for
erasing is 15 J/cm
2
.
Programming operation
To program the M37735EHBXXXFP, first set V
CC
= 6 V, V
PP
= 12.5
V, and set the address to 01000
16
. Apply a 0.2 ms programming
pulse, check that the data can be read, and if it cannot be read OK,
repeat the procedure, applying a 0.2 ms programming pulse and
checking that the data can be read until it can be read OK. Record
the accumulated number of pulse applied (X) before the data can be
read OK, and then write the data again, applying a further once this
number of pulses (0.2
X ms).
When this series of programming operations is complete, increment
the address, and continue to repeat the procedure above until the
last address has been reached.
Finally, when all addresses have been programmed, read with V
CC
=
V
PP
= 5 V (or V
CC
= V
PP
= 5.5 V).
Table 2. I/O signal in each mode
Read-out
Output
Disable
Programming
Programming
Verify
Program Disable
V
IL
V
IL
V
IH
V
IL
V
IL
V
IH
V
IL
V
IH
X
V
IH
V
IL
V
IH
X
X
X
V
IL
V
IH
V
IH
5 V
5 V
5 V
12.5 V
12.5 V
12.5 V
5 V
5 V
5 V
6 V
6 V
6 V
Output
Floating
Floating
Input
Output
Floating
__
CE
__
OE
___
PGM
V
PP
V
CC
Data I/O
Mode
Pin
Note 1
: An X indicates either V
IL
or V
IH
.
Programming operation (equivalent to the M5M27C101K)
AC ELECTRICAL CHARACTERISTICS (T
a
= 25 ± 5 °C, V
CC
= 6 V ± 0.25 V, V
PP
= 12.5 ± 0.3 V, unless otherwise noted)
__
OE
setup time
Data setup time
Address hold time
Data hold time
Output enable to output float delay
V
CC
setup time
setup time
___
pulse width
___
over program pulse width
__
CE
setup time
__
Data valid from
OE
μ
s
μ
s
μ
s
μ
s
μ
s
ns
μ
s
μ
s
ms
ms
μ
s
ns
t
AS
t
OES
t
DS
t
AH
t
DH
t
DFP
t
VCS
t
VPS
t
PW
t
OPW
t
CES
t
OE
Min.
2
2
2
0
2
0
2
2
0.19
0.19
2
Typ.
0.2
Max.
130
0.21
5.25
150
Symbol
Parameter
Test conditions
Limits
Unit
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