tmp19a61f10xbg TOSHIBA Semiconductor CORPORATION, tmp19a61f10xbg Datasheet - Page 514

• Manufacturer Part Number: tmp19a61f10xbg
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Determine the conditions (e.g., pin states) required for the flash memory to enter User Boot mode and
the I/O bus to be used to transfer new program code. Create hardware and software accordingly. Before
installing the TMP19A61 on a printed circuit board, write the following two program routines into an
arbitrary flash block using programming equipment.
After RESET is released, the reset procedure determines whether to put the TMP19A61 flash memory
in User Boot mode. If mode switching conditions are met, the flash memory enters User Boot mode. (All
interrupts including NMI must be disabled while in User Boot mode).
(1-B) Transferring a Programming Routine from an External Host
(Step-1)
(Step
(a) Mode judgment routine: Code to determine whether or not to switch to User Boot mode
(b) Transfer routine: Code to download new program code from a host controller
Also, prepare a programming routine shown below on the host controller:
(c) Programming routine: Code to download new program code from an external host controller and
re-program the flash memory
-
2)
(TMP19A61)
(a)
(b) Transfer routine
Old Application Program
Old Application Program
(a) Mode Judgment routine
(b)
(TMP19A61)
Flash memory
Flash memory
[Reset Procedure]
[Reset Procedure]
Mode judgment routine
Programming Routine
Code
Code
TMP19A61 (rev1.0) 22-513
(I/O)
(I/O)
(Host)
(Host)
RAM
RAM
(c)
(c)
Programming routine
Programming routine
New Application
New Application
Program Code
Program Code
Conditions for
entering User Boot
mode (defined by
the user)
0 → 1 RESET
TMP19A61