SP791EB データシートの表示（PDF） - Signal Processing Technologies
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SP791EB Datasheet PDF : 6 Pages
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SP791 Pin Assignments
SP791 Pin Assignments
Pin No.
Pin Name
1
VBATT
2
VOUT
3
VCC
4
GND
5
BATT ON
6
PFO
7
PFI
8
SWT
9
MR
10
LOWLINE
11
WDI
12
CE OUT
13
CE IN
14
WDO
15
RESET
16
WDPO
Pin Function
Backup-Battery Input
Output Supply Voltage
Input Supply Voltage
Ground for all Signals
Battery On Output
Power-Fail Output
Power-Fail Input
Set Watchdog-Timeout Input
Manual-Reset Input
Lowline Output
Watchdog Input
Chip-Enable Output
Chip-Enable Input
Watchdog Output
Reset Output
Watchdog-Pulse Output
ActiveLevel
NA
NA
NA
NA
HIGH
LOW
HIGH
NA
LOW
LOW
Transitions
LOW
LOW
LOW
LOW
LOW
Input Pin Points
R1 & R2
1.6S or CSWT
GND
VOUT & GND
VOUT & GND
Power Supply Connections
Pin 3 — VCC — connect to external +5
VDC supply.
Pin 1 — VBATT — connect to external V+
supply of 2.8 to 4.0 VDC, or install capacitor
CBATT and charging diode D1 (see List of
Materials).
Pin 4 — GND — connect to negative or
ground of +5VDC supply and ground of V+
supply for VBATT
Note: Ensure VCC, VBATT and GND
connections are made before operating device.
SP791 Evaluation Board List of Materials
Component
uP Supervisor IC
Pin Receptacle-Female
Ceramic Capacitor 0.1uF
Al. Spacers - 0.5"
6-32 Hex Nut
Optional:
16 Pin DIP Socket
16 Pin SOIC Socket
Maxcap 1F 5.5V
Signal Diode
Pin Receptacle - Male
Part Number
SP791
300-1150-1472-7040
8414
216-3340-00-0602
216-7383-55-1902
LC055105A
3137-3002-10-0080
Manufacturer
Sipex
Mill-Max Mfg.
Generic
Keystone Elec.
Generic
3M - Textool
3M - Textool
Cesiwid Inc.
Generic
Mill-Max Mfg.
Ref. Des.
U3
C1, 2
U1
U2
CBATT
D1
Quantity
1
26
2
4
4
1
1
1
1
26
SP791EB/04
SP791 Evaluation Board Manual
4
©Copyright 2000 Sipex Corporation
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