TC1232 View Datasheet(PDF) - TelCom Semiconductor Inc => Microchip
Part Name
Description
MFG CO.
'TC1232' PDF : 6 Pages View PDF
MICROPROCESSOR MONITOR
tPB
PB RST
tPBD
VIL
RST
RST
VIH
tRST
tF
VCC
+4.75V
+4.25V
1
TC1232
2
3
Figure 3. Push-button Reset. The debounced PB RST input
ignores input pulses less than 1msec and is guaranteed
to recognize pulses of 20msec or greater
PUSH-BUTTON RESET
tST
ST
tTD
NOTE:
tTD IS THE MAXIMUM ELAPSED TIME BETWEEN ST HIGH-TO-LOW
TRANSITIONS (ST IS ACTIVATED BY FALLING EDGES ONLY) WHICH
WILL KEEP THE WATCHDOG TIMER FROM FORCING THE RESET
OUTPUTS ACTIVE FOR A TIME OF tRST. tTD IS A FUNCTION OF THE
VOLTAGE AT THE TD PIN, AS TABULATED BELOW.
CONDITON
tTD
MIN
TYP
MAX
TD PIN = 0V
TD PIN = OPEN
TD PIN = VCC
62.5msec
250msec
500msec
150msec
600msec
1200msec
250msec
1000msec
2000msec
Figure 4. Strobe Input
VCC
TELCOM SEMICONDUCTOR, INC.
4
Figure 5. Power-Down Slew Rate
5
tR
+4.75V
6
+4.25V
Figure 6. Power-Up Slew Rate
7
8
5-23
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