SP690TEN-L Exar Corporation, SP690TEN-L Datasheet - Page 4

• Manufacturer Part Number: SP690TEN-L
• Description: IC SUPERVISOR MPU LP 8NSOIC
• Manufacturer: Exar Corporation
• Type: Simple Reset/Power-On Resetr

Specifications of SP690TEN-L

• Number Of Voltages Monitored: 1
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 3.08V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Threshold Voltage: 3.075V
• No. Of Supervisors / Monitors: 1
• Supply Voltage Range: 0V To 5.5V
• Reset Type: Active-Low
• Supply Current: 35µA
• Delay Time: 200ms
• Digital Ic Case Style: SOIC
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 1016-1222-5

Figure 10. Pinout
PIN ASSIGNMENTS
Pin 1 —V
Pin 2 — V
Pin3 — GND — Ground reference for all signals
Pin 4 — PFI — Power-Fail Input. This is the
Pin 5 — PFO — Power-Fail Output.
Pin 6 — WDI — Watchdog Input. WDI is a
Pin 7 for SP690A/692A/802 only — RESET
Date: 11/29/04
GND
V
V
PFI
OUT
CC
connects to V
V
old. When V
V
connects to V
capacitor from V
noninverting input to the power-fail com-
parator. When PFI is less than 1.25V,
PFO goes low. Connect PFI to GND or
V
three level input. If WDI remains high or
low for 1.6sec, the internal watchdog timer
triggers a reset. If WDI is left floating or
connected to a high-impedance tri-state
buffer, the watchdog feature is disabled.
The internal watchdog timer clears when-
ever reset is asserted.
(Active Low)– Reset Output. RESET Out-
put goes low whenever V
the reset threshold or whenever WDI
remains high or low longer than 1.6
seconds. RESET remains low for 200ms
after V
voltage on power-up or after being trig-
gered by WDI.
BATT
CC
OUT
2
1
3
4
OUT
CC
is below the reset threshold, V
when not used.
and V
— Output Supply Voltage. V
CC
SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over
— +5V Supply Input
crosses the reset threshold
CC
CC
CC
BATT
is above the reset thresh-
when V
falls below V
OUT
8
7
6
5
. Connect a 0.1µF
*( ) SP805 only
to GND.
RESET (RESET)*
V
PFO
WDI
BATT
CC
CC
is greater than
falls below
BATT
and
OUT
OUT
4
Figure 11. Internal Block Diagram
Pin 7 for SP805 only — RESET (Active High)–
Pin 8 — V
V
WDI
PFI
V
BATT
CC
Reset Output is the inverse of RESET;
when RESET is asserted, the RESET
output voltage = V
whichever is higher.
V
will be switched to V
20mV greater than V
20mV above V
reconnected to V
hysteresis prevents repeated switching if
V
BATTERY-SWITCHOVER
3.5V
CC
CC
BATT
falls below the reset threshold, V
falls slowly.
CIRCUITRY
1.25V
0.8V
— Backup-Battery Input. When
1.25V
© Copyright 2004 Sipex Corporation
*( ) SP805 only
GENERATOR
BATT
WATCHDOG
TIMER
RESET
CC
CC
CC
, V
. When V
OUT
.
OUT
The 40mV
or V
if V
(RESET)*
will be
RESET
BATT
CC
BATT
V
PFO
OUT
BATT
rises
is
,