CAT1027 CATALYST [Catalyst Semiconductor], CAT1027 Datasheet - Page 8

• Manufacturer Part Number: CAT1027
• Description: Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
• Manufacturer: CATALYST [Catalyst Semiconductor]

Figure 2. Auxiliary Voltage Monitor Timing
Figure 1. RESET Output Timing
Figure 3. Auxiliary Voltage Monitor
CAT1026, CAT1027
Doc. No. 3010, Rev. K
RESET
RESET
V
CC
V
RVALID
V
TH
V SENSE
Externally adjustable
V LOW
V REF
threshold
V TH-ADJ
t
PURST
R 1
R 2
t RPD2
V TH-ADJ = V REF
V AUX
V SENSE
CAT1026/27
R 1 + R 2
R 2
t RPD2
t
GLITCH
t
8
V LOW
RPD1
= 1.25V
V CC
R 1 + R 2
R 2
t RPD2
t
PURST
Power Fail
Interrupt
t RPD2
t
RPD1