TMP92xy21FG Toshiba, TMP92xy21FG Datasheet - Page 318

• Manufacturer Part Number: TMP92xy21FG
• Manufacturer: Toshiba

Specifications of TMP92xy21FG

• Package: LQFP144
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): Romless
• Rom Combinations: Romless
• Ram Combinations: 16
• Architecture: 32-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 2
• I2c/sio Bus Channels: -
• (s)dram Controller: 1
• Adc 10-bit Channel: 4
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: 1
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 82
• Power Supply Voltage(v): 3.0 to 3.6

3.12.3
Note1: If the disable control is used, set the disable code (B1H) to WDCR after writing the clear code (4EH) once.
Note2: If the watchdog timer setting is changed, change setting after setting to disable condition once.
Control Registers
(1) Watchdog timer mode register (WDMOD)
(2) Watchdog timer control register (WDCR)
The watchdog timer (WDT) is controlled by two control registers WDMOD and WDCR.
(Please refer to setting example.)
•
•
•
1.
2.
3.
This register is used to disable and clear the binary counter for the watchdog timer.
writing the disable code (B1H) to the WDCR register.
(4EH) to the WDCR register.
Disable control
Enable control
Watchdog timer clear control
WDCR
WDMOD
WDCR
WDCR
Setting the detection time for the watchdog timer in <WDTP1:0>
when detecting runaway.
approximately 65,536.)
Watchdog timer enable/disable control register <WDTE>
disable code (B1H) to the watchdog timer control register (WDCR). This makes it
difficult for the watchdog timer to be disabled by runaway.
the enabled state merely by setting <WDTE> to 1.
Watchdog timer out reset connection <RESCR>
RESET terminal internally. Since WDMOD<RESCR> is initialized to 0 at reset, a
reset by the watchdog timer will not be performed.
The watchdog timer can be disabled by clearing WDMOD<WDTE> to 0 and then
Set WDMOD<WDTE> to 1.
To clear the binary counter and cause counting to resume, write the clear code
This 2-bit register is used for setting the watchdog timer interrupt time used
On a reset this register is initialized to WDMOD<WDTP1:0> = 00.
The detection time for WDT is 2
At reset, the WDMOD<WDTE> is initialized to 1, enabling the watchdog timer.
To disable the watchdog timer, it is necessary to set this bit to 0 and to write the
However, it is possible to return the watchdog timer from the disabled state to
This register is used to connect the output of the watchdog timer with the
← 0
← 0
← 1
← 0
1
−
0
1
0
−
1
0
92CH21-316
X
0
1
0
1
0
0
1
1
−
0
1
1
−
0
1
0
0
1
0
15
/f
IO
Write the clear code (4EH).
Clear WDMOD <WDTE> to 0.
Write the disable code (B1H).
Write the clear code (4EH).
[s]. (The number of system clocks is
TMP92CH21
2009-06-19