SA56600-42 Datasheet, PDF (3/12 Pages) NXP Semiconductors – System reset for lithium battery backup

Philips Semiconductors
System reset for lithium battery back-up
Product data
SA56600-42
Part number marking
The package is marked with a four letter code in the first line to the
right of the logo. The first three letters designate the product. The
fourth letter, represented by ‘x’, is a date tracking code. The
remaining two or three lines of characters are internal manufacturing
codes.
PIN CONFIGURATION
GND 1
RESET 2
CS 3
V_BATT 4
TOP VIEW
SO8
8 V_CC
7Y
6 V_OUT
5 CS
SL01278
Figure 2. Pin configuration.
Part number
SA56600-42
Marking
AAAx
PIN DESCRIPTION
PIN
SYMBOL
1
GND
2
RESET
3
CS
4
V_BATT
5
CS
6
V_OUT
7
Y
8
V_CC
DESCRIPTION
Circuit ground for the device.
Asserted open collector output LOW whenever the V_CC input source voltage falls below V_S (4.2 V typical).
The open collector topology requires an external pull-up resistor.
Chip select HIGH output signal, asserted whenever the V_CC input source voltage is above V_S (4.2 V typical).
Can be used as a chip enable HIGH (CE) signal for system SRAM.
Positive polarity connection for lithium back-up battery.
Asserted chip select LOW output signal whenever the V_CC input source voltage is above V_S (4.2 V typical)
and Y is grounded. Can be used as a chip enable LOW (CE) signal for system SRAM.
Primary power with lithium battery back-up power for the protected system. Switch over to lithium battery
back-up operation occurs when V_CC falls below V_S.
Open Emitter input to microcontroller used to enable CS output (microcontroller controls CS function).
Primary input power source for device.
MAXIMUM RATINGS
SYMBOL
V_CC(max)
V_CC(op)
I_O (V_CC)
I_O (V_BATT)
T_oper
T_stg
P
Power supply voltage
Operating voltage
Output current
Output current
Operating temperature
Storage temperature
Power dissipation
PARAMETER
RATING
–0.3 to +7.0
–0.3 to +7.0
80
200
–40 to +85
–40 to +125
250
UNIT
V
V
mA
µA
°C
°C
mW
2001 Jun 19
3