tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 350
tmp19a43fzxbg
Manufacturer Part Number
tmp19a43fzxbg
Description
32bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP19A43FZXBG.pdf
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3.19 Watchdog Timer (Runaway Detection Timer)
3.19.1
Internal Reset
(WDT) detects this runaway condition to re-establish a normal condition. Upon detecting a runaway condition,
the watchdog timer notifies the CPU by generating a non-maskable interrupt.
forcibly reset the device.
The TMP1942 contains a watchdog timer for the purpose of runaway detection.
When the CPU starts operating erratically (runaway) due to noise or other causes, the watchdog timer
Also, output from the watchdog timer can be transmitted to a reset input (internal to the chip) in order to
f
SYS
Configuration
Figure 3.19.1 shows a block diagram of the watchdog timer.
/2
<WDTP1 : 0>
WDMOD
Binary Counter (22 stages)
Figure 3.19.1 Watchdog Timer Block Diagram
2
15
2
Write 4EH
TMP1942CY/CZ-349
17
Selector
Control Register WDCR
2
Internal Data Bus
Watchdog Timer
19
2
21
Reset
Write B1H
WDMOD <RESCR>
R
Reset Controller
WDMOD <WDTE>
Q
S
TMP1942CY/CZ
Interrupt Request
INTWD
Internal Reset
RESET Pin
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