tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 628

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

ROM Data Protection
This function does not cover:
・ How to make the protection valid
“1”and enabled after power-on.)
・Procedure of detecting protection
・Procedure of SECBIT protection
・ Procedure of ROM data protection
・ Procedure of DSU protection
Various protecting functions
●TMP19A44F10XBG (evaluation sample)
The ROM data protection restricts data reading from internal FLASH.
1) Issuing a protecting bit erase command from normal area.
2) Detecting protection.
3) Deleting the entire data in FLASH.
4) Deleting a protecting bit.
1) Writing corresponding SECBIT from normal area.
2) Detecting protection (no value updated).
1) Reading protected area from normal area.
2) Detecting protection.
1) Either of the following takes place:
2) Detecting protection.
3) Inhibiting break (executes EJTAGBOOT and step) and trace (including store to trace memory).
- access to unprotected area
- access to protected area by ROM correction (the area is considered to be
- access to an internal RAM, internal Boot-ROM, external memory and DSU (debug area)
- access to operand by an internal DMAC
- access by FLASH writer
Set SECBIT, which corresponds to area to protect, of the SECBIT register to “1” (enabled). (All bits are set to
(Flash writer is used)
(Others)
- Executing an instruction in protected area (for inhibiting break, event/ PC trace).
- Executing operand bus cycle caused by an instruction in protected area (for inhibiting data trace).
“0x0098” can be read.
Initial data in an internal ROM can be read.
TMP19A44 (rev1.3) 25-4
accessed by an
internal RAM)
TMP19A44
2010-04-01