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S1F76640 Series
S1F70000 Series EPSON 2–41
Technical Manual
S1F76640
Series
Pin No. Pin name Description
1 RV Stabilization voltage regulation pin.
When the intermediate tap of the external volume (3-pin resistor)
connected between the V
DD pin and the VREG pin is connected to the
RV pin, V
REG output voltage can be adjusted.
2VREG Stabilized voltage output pin
3 TC1 Temperature gradient selection pin
4 TC2 Temperature gradient selection pin
5POFF VREG output ON/OFF control pin.
When control signal from the system side is input to this pin, the power
off (V
REG output power off) control of S1F76640 becomes available.
6 GND Power supply pin (minus side, system GND)
7 OSC1 Oscillation resistor connection pin.
This pin becomes the clock input pin when an external clock operates.
8 OSC2 Oscillation resistor connection pin.
This pin is released when an external clock operates.
9VDD Power supply pin (plus side, system VCC)
10 CAP1– Pump up capacitor minus side connection pin for 2 times step-up.
Next stage clock at series connection time.
11 CAP1+ Pump up capacitor plus side connection pin for 2 times step-up
12 CAP2– Pump up capacitor minus side connection pin for 3 times step-up.
Output pin at 2 time step-up time (to be short-circuited to V
O).
13 CAP2+ Pump up capacitor plus side connection pin for 3 times step-up
14 CAP3+ Pump up capacitor plus side connection pin for 4 times step-up.
Output pin at 3 times step-up time (to be short-circuited to V
O).
15 VO Output pin at 3 times step-up time
16 VRI Stabilization circuit input pin
PIN DESCRIPTIONS