tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 162

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

14.2
Command Sequence
14.2.3
14.2.4
14.2.5
14.2.6
Note:The value at address F002H (flash size) depends on the size of flash memory incorporated in each product.
not be executed until the erase operation is completed. To check the completion of the erase operation, per-
form read operations repeatedly for data polling until the same data is read twice from the same address in
the flash memory. During the erase operation, any consecutive attempts to read from the same address is re-
versed bit 6 of the data (toggling between 0 and 1). After the chip is erased, all bytes contain FFH.
the security program status can be read from the flash memory.
ity program is enabled, the flash memory cannot be read in the parallel PROM mode. In the serial PROM
mode, the flash write and RAM loader commands cannot be executed.
er or not the security program is enabled can be checked by reading FF7FH in the Product ID mode. For de-
tails, see Table 14-2.
not be executed until this operation is completed. To check the completion of the security program opera-
tion, perform read operations repeatedly for data polling until the same data is read twice from the same ad-
dress in the flash memory. During the security program operation, any attempts to read from the same ad-
dress is reversed bit 6 of the data (toggling between 0 and 1).
This command erases the entire flash memory in approximately 45 ms. The next command sequence can-
This command activates the Product ID mode. In the Product ID mode, the vendor ID, the flash ID, and
This command is used to exit the Product ID mode.
This command enables the read or write protection protection setting in the flash memory. When the secur-
To disable the security program setting, it is necessary to execute the chip erase command sequence. Wheth-
It takes a maximum of 40 μs to set security program in the flash memory. The next command sequence can-
For example, if the product has 60-kbyte flash memory, "0EH" is read from address F002H.
Chip Erase (All Erase)
Product ID Entry
Product ID Exit
Security Program
Table 14-2 Values To Be Read in the Product ID Mode
Address
F000H
F001H
F002H
FF7FH
Security program status
Flash macro ID
Vendor ID
Flash size
Meaning
Page 144
98H
41H
0EH:
0BH:
07H:
05H:
03H:
01H:
00H:
FFH:
Other than FFH: Security program enabled
60 kbytes
48 kbytes
32 kbytes
24 kbytes
16 kbytes
8 kbytes
4 kbytes
Security program disabled
Read Value
TMP86FH46BNG