TNA091AE Datasheet, PDF (8/10 Pages) Renesas Technology Corp – MPU/MCU

RENESAS TECHNICAL UPDATE TN-5; A/E
Page 1138 of 1209
Descriptions in 35.9.10.6, Erase Ready Operation are corrected as follows:
Date: April 3, 2014
Before correction
(1) Send the erase preparation command (48h) to place the MCU in the erase wait state. The MCU enters the erase wait
state and sends a response (06h).
(2) Send a block erase command (59h) to erase blocks in the MCU. When blocks are erased successfully, the MCU
sends a response (06h). When the MCU fails to receive, the MCU sends an error response (D9h).
Send a block erase command repeatedly until block erase commands for all blocks are sent. When the operation
ends before all the block erase commands are sent, a command error may occur even when a correct command is
sent in the program/erase state.
(3) In order to place the MCU in the program/erase state, send a block erase command for end of erase (59h 04h FFh
FFh FFh FFh A7h). The MCU enters the program/erase state and sends a response (06h).
After correction
(1) Send the erase preparation command (48h) to place the MCU in the erase wait state. The MCU enters the erase wait
state and sends a response (06h).
(2) Send a block erase command (59h) to erase blocks in the MCU. When blocks are erased successfully, the MCU
sends a response (06h). When the MCU fails to receive, the MCU sends an error response (D9h).
Send block erase commands repeatedly until a block erase command has been sent for the total number of blocks.
The total number of blocks is the sum of the user area blocks and data area blocks that are obtained in advance using
the block information inquiry command. If the operation ends before all the block erase commands are sent, a
command error may occur even when a correct command is sent in the program/erase state.
(3) Send a block erase command for end of erase (59h 04h FFh FFh FFh FFh A7h). The MCU sends a response (06h).
(4) To confirm whether erase ready operation has ended, send a boot mode status inquiry command (4Fh). When the
erase ready operation has ended, the MCU returns the result of the boot mode status inquiry. When the erase ready
operation has not ended, the MCU sends an error response (80h 4Fh). When an error response is received, restart the
MCU in boot mode and perform the procedure again from section 35.9.10.1, Bit Rate Automatic Adjustment Procedure.
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