tmp88ch41ug TOSHIBA Semiconductor CORPORATION, tmp88ch41ug Datasheet - Page 189

• Manufacturer Part Number: tmp88ch41ug
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18.2 Command Sequence
18.2.1 Byte Program
18.2.2 Sector Erase (4-kbyte Erase)
18.2.3 Chip Erase (All Erase)
18.2.4 Product ID Entry
as shown in Table 18-1.
The command sequence in the MCU and the serial PROM modes consists of six commands (JEDEC compatible),
Note 1: Set the address and data to be written.
Note 2: Set the address which is the specified sector. (The area to be erased is specified with the upper 8 bits of the address.)
in the 4th bus write cycle. Each byte can be programmed in a maximum of 40 µs. The next command sequence
cannot be executed until the write operation is completed. To check the completion of the write operation, per-
form read operations repeatedly until the same data is read twice from the same address in the flash memory.
During the write operation, any consecutive attempts to read from the same address is reversed bit 6 of the data
(toggling between 0 and 1).
by the upper 4 bits of the 6th bus write cycle address. For example, to erase 4 kbytes from F000H to FFFFH,
specify one of the addresses in F000H-FFFFH as the 6th bus write cycle. The sector erase command is effec-
tive only in the MCU and serial PROM modes, and it cannot be used in the parallel PROM mode.
erase operation is completed. To check the completion of the erase operation, perform read operations repeat-
edly 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 reversed bit 6 of the data (toggling
between 0 and 1).
be executed until the erase operation is completed. To check the completion of the erase operation, perform
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 reversed bit 6
of the data (toggling between 0 and 1). After the chip is erased, all bytes contain FFH.
read protection status can be read from the flash memory.
This command writes the flash memory for each byte unit. The addresses and data to be written are specified
Note:To rewrite data to Flash memory addresses at which data (including FFH) is already written, make sure to
This command erases the flash memory in units of 4 kbytes. The flash memory area to be erased is specified
A maximum of 30 ms is required to erase 4 kbytes. The next command sequence cannot be executed until the
This command erases the entire flash memory in approximately 30 ms. The next command sequence cannot
This command activates the Product ID mode. In the Product ID mode, the vendor ID, the flash ID, and the
(Example) In case " Sector 1 ", SA is " 0x05yyy ".
erase the existing data by "sector erase" or "chip erase" before rewriting data.
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TMP88FH41UG