
MB89120/120A Series
14
4.
Setting OTPROM Options (MB89P135A Only)
The programming procedure is the same as that for the PROM. Options can be set by programming values at
the addresses shown on the memory map. The relationship between bits and options is shown on the following
bit map :
OTPROM option bit map
Address
Bit 7
Bit 6
Bit 5
Bit 4
Note : Each bit is set to “1” as the initialized value, therefore the pull-up option is not selected.
Bit 3
Bit 2
Bit 1
Bit 0
3FF0
H
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Clock mode
selection
1 : Single
clock
0 : Dual
clock
Reset pin
output
1 : Yes
0 : No
Power-on
reset
1 : Yes
0 : No
Oscillation
stabilization time
00 : 2
2
/F
CH
01 : 2
12
/F
CH
10 : 2
16
/F
CH
11 : 2
18
/F
CH
3FF1
H
P07
Pull-up
1 : Yes
0 : No
P06
Pull-up
1 : Yes
0 : No
P05
Pull-up
1 : Yes
0 : No
P04
Pull-up
1 : Yes
0 : No
P03
Pull-up
1 : Yes
0 : No
P02
Pull-up
1 : Yes
0 : No
P01
Pull-up
1 : Yes
0 : No
P00
Pull-up
1 : Yes
0 : No
3FF2
H
P17
Pull-up
1 : Yes
0 : No
P16
Pull-up
1 : Yes
0 : No
P15
Pull-up
1 : Yes
0 : No
P14
Pull-up
1 : Yes
0 : No
P13
Pull-up
1 : Yes
0 : No
P12
Pull-up
1 : Yes
0 : No
P11
Pull-up
1 : Yes
0 : No
P10
Pull-up
1 : Yes
0 : No
3FF3
H
P37
Pull-up
1 : Yes
0 : No
P36
Pull-up
1 : Yes
0 : No
P35
Pull-up
1 : Yes
0 : No
P34
Pull-up
1 : Yes
0 : No
P33
Pull-up
1 : Yes
0 : No
P32
Pull-up
1 : Yes
0 : No
P31
Pull-up
1 : Yes
0 : No
P30
Pull-up
1 : Yes
0 : No
3FF4
H
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
3FF5
H
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
3FF6
H
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable
Vacancy
Readable
and
writable