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MSM64P155 Datasheet(PDF) 5 Page - OKI electronic componets

Part # MSM64P155
Description  4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

MSM64P155 Datasheet(HTML) 5 Page - OKI electronic componets

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MSM64P155/64P155L
¡ Semiconductor
5/29
PIN DESCRIPTIONS
Basic Functions
Power
Supply
Pin
Digital supply voltage (0 V)
Description
Type
Function
Oscillation
Test
RESET
23
100
99
98
97
96
4
Digital positive power supply (1.5 V spec.)
Bias output for LCD driver (3.0 V spec.)
Digital positive power supply (3.0 V spec.)
Bias output for LCD driver (1.5 V spec.)
Bias output for LCD driver (+4.5 V)
Pins for connecting a capacitor for generating LCD driving bias
Positive power supply for writing programming data to PROM
(+12.5 V)
Clock oscillation pins:
Either a crystal (32.768 kHz) and a capacitor (10 to 30 pF) are
connected to these pins or a resistor (1 MW) is.
2
3
I
O
30
29
28
I
I
I
Input pins for test:
These pins are internally pulled down to VSS.
1I
System reset input pin :
Setting this pin to "H" level puts this device into a reset state.
Then, setting this pin to "L" level starts executing an instruction from
address 000H.
This pin is internally connected to VSS through a pull-down resistor.
Symbol
VSS
VDD1
VDD2
VDD3
C1
C2
VPP
OSC0
OSC1
TST1
TST2
TST3
RESET
When this pin is set to "H" level, the 256 Hz and 4 Hz interrupts are
enabled, and then the MSM64P155 can be used as an OTP version
of the MSM64152A, MSM64153A, and MSM64158A.


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