tmp19a43fd TOSHIBA Semiconductor CORPORATION, tmp19a43fd Datasheet - Page 28

• Manufacturer Part Number: tmp19a43fd
• Description: 32-bit Risc Microprocessor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(2-A) General Procedure: Using the Program in the On-Chip Boot ROM
(1) The flash block containing the older version of the program code need not be erased before
(2) Reset the TMP19A43FDXBG with the mode setting pins held at appropriate logic values, so that
Boot Mode
executing the programming routine. Since a programming routine and programming data are
transferred via the SIO0, the SIO0 must be connected to a host controller. Prepare a programming
routine on the host controller.
the CPU re-boots from the on-chip boot ROM. The 12-byte password transferred from the host
controller is first compared to the contents of special flash memory locations. (If the flash block
has already been erased, the password is 0xFFFF.)
TMP19A43FDXBG
TMP19A43FDXBG
Old Application Program
Old Application Program
Code (or Erased State)
Code (or Erased State)
Flash Memory
Flash Memory
Boot ROM
Boot ROM
TMP19A43 (rev2.0)3-14
Host Controller
Host Controller
I/O
I/O
SIO0
SIO0
RAM
RAM
(a) Programming Routine
(a) Programming Routine
New Application
New Application
Conditions for
entering Single Boot
mode
Program Code
Program Code
0 o 1 RESET
Flash Memory Operation
TMP19A43