5.1 Cold Reset
When turning-on power, it is necessary to take a stable time of built-in regulator, built-in Flash memory and in-
ternal high-speed oscillator into consideration. TMP
M3V6/
M3
V4
has a function to insert a stable time
automatically.
5.1.1 Reset by VLTD circuit (not using RESET pin)
IRVF>V@
(tPWUP)
0V
Power voltage operation range
Power-on-reset release voltage
CPU fetch starts
Power-on counter
Power-on detection signal
Internal reset signal
RESET pin
9/7'
detection
YROWDJH9s9
Figure 5-1 Reset Operation by VLTD Circuit
TMPM3V6/M3V4
5. Reset Operation
5.1 Cold Reset
Page 42
2019-02-06
Note:The above sequence is applied as well when restoring power.
Once power voltage is beyond operating voltage of power-on-reset, internal reset signal is enabled.
TMPM3
V6
/
M3V4
ha
ve
a function to enable low voltage detection circuit (VLTD) operation. And beyond
the release voltage of power-on-reset, kept internal reset by VLTD. When the supply voltage becomes upper
than the VLTD detection voltage, power counter starts operation, and then after tPWUP (approximately
0.9ms in fosc=9MHz) internal reset signal is released.
Power-on-reset circuit operation is referred to Section of " Power-on-reset circuit (POR) ". And low volt-
age detection circuit operation is referred to Section of " Low voltage detection circuit (VLTD) " .
Summary of Contents for TMPM3V4
Page 1: ...32 Bit RISC Microcontroller TX03 Series TMPM3V6 M3V4 ...
Page 2: ... 2019 Toshiba Electronic Devices Storage Corporation ...
Page 7: ...Revision History Date Revision Comment 2019 02 06 1 First Release ...
Page 8: ......
Page 22: ...xiv ...
Page 52: ...TMPM3V6 M3V4 3 Processor Core 3 6 Exclusive access Page 30 2019 02 06 ...
Page 148: ...TMPM3V6 M3V4 7 Exceptions 7 6 Exception Interrupt Related Registers Page 126 2019 02 06 ...
Page 178: ...TMPM3V6 M3V4 9 Input Output port 9 2 Block Diagrams of Ports Page 156 2019 02 06 ...
Page 354: ...TMPM3V6 M3V4 14 Synchronous Serial Port SSP 14 6 Frame Format Page 332 2019 02 06 ...
Page 419: ...TMPM3V6 M3V4 Page 397 2019 02 06 ...
Page 462: ...TMPM3V6 M3V4 21 Watchdog Timer WDT 21 5 Control register Page 440 2019 02 06 ...
Page 544: ......