TC1275 MICROCHIP [Microchip Technology], TC1275 Datasheet - Page 4

• Manufacturer Part Number: TC1275
• Description: 3-Pin Reset Monitors for 3.3V Systems
• Manufacturer: MICROCHIP [Microchip Technology]

TC1275/TC1276/TC1277
3.0
3.1
of detecting out-of-tolerance power supply conditions
and warning a processor-based system of impending
power failure.
tolerance, the RESET signal is asserted. On power-up,
RESET is kept active for approximately 200msec after
the power supply has reached the selected tolerance.
This allows the power supply and microprocessor to
stabilize before RESET is released.
FIGURE 3-1:
FIGURE 3-2:
DS21383B-page 4
V
RESET
V
RESET
CC
CC
The TC1275/TC1276/TC1277 provide the function
APPLICATIONS INFORMATION
Operation – Power Monitor
V
CCTP
(MAX)
V
When V
CCTP
V
CCTP
(MIN)
Timing Diagram – Power
Up (TC1275/TC1276)
Timing Diagram – Power
Down (TC1275/TC1276)
CC
V
CCTP
V
CCTP
is detected as out-of-
V
V
t
RPU
CCTP
OL
(MIN)
t
1
F
(MAX)
t
R
t
RPD1
V
OH
FIGURE 3-3:
FIGURE 3-4:
V
V
RESET
RESET
CC
CC
V
CCTP
(MAX)
V
CCTP
V
CCTP
V
OH
(MIN)
V
CCTP
Timing Diagram –
Power Up (TC1277)
Timing Diagram –
Power Down (TC1277)
©
(MIN)
2002 Microchip Technology Inc.
t
F
t
RPD2
RESET SLEWS WITH V
V
CCTP
t
RPU2
V
CCTP
(MAX)
t
R
V
CC
OL