參數(shù)資料
型號: MB90670
廠商: Fujitsu Limited
英文描述: Scan Test Devices With Octal Bus Transceivers And Registers 28-CDIP -55 to 125
中文描述: 16位微控制器專有
文件頁數(shù): 23/106頁
文件大?。?/td> 1648K
代理商: MB90670
MB90670/675 Series
23
I
PROGRAMMING TO THE ONE-TIME PROM ON THE MB90P673/P678
The MB90P673 and MB90P678 has a PROM mode for emulation operation of the MBM27C1000/1000A, to
which writing codes by a general-purpose ROM writer can be done via a dedicated adapter. Please note that
the device is not compatible with the electronic signature (device ID code) mode.
1.
Writing Sequence
The memory map for the PROM mode is shown as follows. Write option data to the option setting area according
by referring to “7. PROM Option Bit Map”.
Write data to the one-time PROM microcontrollers according to the following sequence.
(1) Set the PROM programer to select the MBM27C1000/1000A.
(2) Load the program data to the ROM programer address
*1
to 1FFFF
H
. To select a PROM option, load the
option data from 00000
H
to 0002C
H
referring to “7. PROM Option Bit Map”.
(3) Set the chip to the adapter socket and load the socket to the ROM programer. Make sure that the device
and adapter socket are properly oriented.
(4) Program from 00000
H
to 1FFFF
H
.
Notes:
In mask-ROM products, there is no PROM mode and it is impossible to read data by a ROM programer.
Contact sales personnel when purchasing a ROM programer.
2.
Program Mode
In the MB90P673/P678, all the bits are set to “1” upon shipping from FUJITSU or erasing operation. To write
data, set desired bit selectively to “0”. However it is impossible to write electronically to the bits.
Note: The ROM image size for bank 00 is 48 Kbytes (ROM image for between FF4000
H
to FFFFFF
H
).
Type
Address*
1
Address*
2
Number of bytes
MB90P673
14000
H
FF4000
H
48 Kbytes
MB90P678
10000
H
FF0000
H
64 Kbytes
FFFFFF
H
010000
H
004000
H
000000
H
Address*
2
Address*
1
1FFFFF
H
00000
H
0002C
H
Normal operation mode
PROM mode
Program area
(PROM)
Program area
(PROM)
ROM image
Option
setting area
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