tmp1940cyaf TOSHIBA Semiconductor CORPORATION, tmp1940cyaf Datasheet - Page 381

• Manufacturer Part Number: tmp1940cyaf
• Description: 32-bit Tx System Risc Tx19 Family
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(2) After
(3) Once User Boot mode is entered, execute the transfer routine to download the flash programming
memory in User Boot mode. If mode switching conditions are met, the flash memory enters User
Boot mode. (All interrupts including NMI must be globally disabled while in User Boot mode.)
routine from the host controller to either the TMP1940FDBF on-chip RAM or an external memory
device. (In the following figure, the on-chip RAM is used.)
RESET
TMP1940FDBF
(a) Mode Judgment Routine
(b) Transfer Routine
(a) Mode Judgment Routine
(b) Transfer Routine
TMP1940FDBF
Flash Memory
Flash Memory
is released, the reset procedure determines whether to put the TMP1940FDBF flash
[Reset Procedure]
[Reset Procedure]
Old Application
Old Application
Program Code
Program Code
TMP1940FDBF-23
Host Controller
Host Controller
(c) Programming routine
I/O
I/O
RAM
RAM
(c) Programming Routine
(c) Programming Routine
New Application
New Application
Program Code
Program Code
Conditions for
entering User Boot
mode (defined by
the user)
0
1 RESET
TMP1940FDBF