參數(shù)資料
型號(hào)： MB89923PF
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： Hex Schmitt-trigger Inverters 14-CDIP -55 to 125
中文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP80
封裝： 20 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 15/46頁(yè)
文件大小： 669K
代理商： MB89923PF
15
MB89920 Series
7. PROM Option Bit Map
Notes:
Set each bit to 1 to erase.
Do not write 0 to the vacant bit.
The read value of the vacant bit is 1, unless 0 is written to it.
Write the same value as each option register to the 3-byte vacant address that follows above option
registers.
Example: In the case of 0FE4
H
, write the same value to 0FE5
H
, 0FE6
H
and 0FF7
H
.
This optional information is taken into the OTPROM while the oscillation is being reset. Therefore, if the
hardware state is initially shifted to standby state after the power supply is turned on, the optional information
will not be valid during the transition (in a state of the initial value 1).
After the hardware standby state is cleared, the oscillation starts and the optional information becomes
valid.
Note that if the hardware is shifted to the standby or stop state in the course of a normal operation
(oscillation), the contents of the optional register are valid since the option data has already been taken
into the OTPROM.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0FE4
H
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Oscillation
stabilization
time
1: Crystal
0: Ceramic
Reset pin
output
1: Yes
0: No
Power-on
reset
1: Yes
0: No
Vacancy
Readable
Vacancy
Readable
0FE8
H
P07
Pull-up
1: No
0: Yes
P06
Pull-up
1: No
0: Yes
P05
Pull-up
1: No
0: Yes
P04
Pull-up
1: No
0: Yes
P03
Pull-up
1: No
0: Yes
P02
Pull-up
1: No
0: Yes
P01
Pull-up
1: No
0: Yes
P00
Pull-up
1: No
0: Yes
0FEC
H
P27
Pull-up
1: No
0: Yes
P26
Pull-up
1: No
0: Yes
P25
Pull-up
1: No
0: Yes
P24
Pull-up
1: No
0: Yes
P23
Pull-up
1: No
0: Yes
P22
Pull-up
1: No
0: Yes
P21
Pull-up
1: No
0: Yes
P20
Pull-up
1: No
0: Yes
0FF0
H
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
P32
Pull-up
1: No
0: Yes
P31
Pull-up
1: No
0: Yes
P30
Pull-up
1: No
0: Yes
0FF4
H
P97
Pull-up
1: No
0: Yes
P96
Pull-up
1: No
0: Yes
P95
Pull-up
1: No
0: Yes
P94
Pull-up
1: No
0: Yes
P93
Pull-up
1: No
0: Yes
P92
Pull-up
1: No
0: Yes
P91
Pull-up
1: No
0: Yes
P90
Pull-up
1: No
0: Yes
0FF8
H
Vacancy
Readable
Vacancy
Readable
WDT/low-
voltage
control
1: Register
0: Option
EPROM
Low-voltage detection
voltage
Low-voltage
reset
1: Yes
0: No
Low-voltage
detection
1:
Automatic
0:
Prohibited
Watchdog
timer (WDT)
1:
Automatic
0:
Prohibited
00: —
10: 3.6 V
01: 3.3 V
11: 4.0 V
0FFC
H
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
Vacancy
Readable
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