TMP91xy16FG Toshiba, TMP91xy16FG Datasheet - Page 173

• Manufacturer Part Number: TMP91xy16FG
• Manufacturer: Toshiba

Specifications of TMP91xy16FG

• Package: LQFP100
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): Romless
• Rom Combinations: Romless
• Ram Combinations: Ramless
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 1
• I2c/sio Bus Channels: -
• (s)dram Controller: 1
• Adc 10-bit Channel: -
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: -
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 31
• Power Supply Voltage(v): 2.7 to 3.6

3.11.3
Operation
WDMOD<WDTP1:0> has elapsed. The watchdog timer must be cleared 0 by software
before an INTWD interrupt will be generated. If the CPU malfunctions (e.g., if runaway
occurs) due to causes such as noise, but does not execute the instruction used to clear the
binary counter, the binary counter will overflow and an INTWD interrupt will be generated.
The CPU will detect malfunction (Runaway) due to the INTWD interrupt and in this case it
is possible to return to the CPU to normal operation by means of an anti-multifunction
program. By connecting the watchdog timer out pin to a peripheral device’s reset input, the
occurrence of a CPU malfunction can also be relayed to other devices.
continues counting during bus release (when
WDMOD<I2WDT> setting. Ensure that WDMOD<I2WDT> is set before the device enters
IDLE2 mode.
The watchdog timer generates an INTWD interrupt when the detection time set in the
The watchdog timer works immediately after reset.
The watchdog timer does not operate in IDLE1 or STOP mode, as the binary counter
When the device is in IDLE2 mode, the operation of WDT depends on the
Example: a. Clear the binary counter.
b. Set the watchdog timer detection time to 2
c. Disable the watchdog timer.
WDCR
WDMOD ← 1 0 1 − − − − −
WDMOD ← 0 − − − − − − −
WDCR
← 0 1 0 0 1 1 1 0
← 1 0 1 1 0 0 0 1
91C016-171
BUSAK
Write the clear code (4EH).
Clear WDTE to 0.
Write disable code (B1H).
goes low).
17
/f
SYS
.
TMP91C016
2008-02-20