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* This specification are subject to be changed without notice.

EM73P461A

EM73P461A

EM73P461A

EM73P461A

EM73P461A

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

12.27.2001

Preliminary

Preliminary

Preliminary

Preliminary

Preliminary

GENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTION

EM73P461A is an advanced single chip CMOS 4-bit one-time programming (OTP) micro-controller. It contains

4K/8K-byte ROM, 244-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/

counters for the kernel function. EM73P461A also contains 6 interrupt sources, 1 input port, 2 bidirection ports,

LCD display (32x4), and one high speed timer/counter with melody output.

EM73P461A has plentiful operating modes (SLOW, IDLE, STOP) intended to reduce the power consumption.

FEATURES

FEATURES

FEATURES

FEATURES

FEATURES

• Operation voltage

: 2.4V to 3.6V.

• Clock source

: Dual clock system. Low-frequency oscillator is Crystal or RC oscillator (32K Hz,

connect an external resistor) by mask option and high-frequency oscillator is RC

oscillator (connect an external resistor).

• Instruction set

: 109 powerful instructions for 4K ROM / 107 powerful instructoins for 8K ROM.

• Instruction cycle time : Up to 2us for 4 MHz (high speed clock).

122 µs or 244µs by frequency double mask option for 32768 Hz (low speed clock).

• ROM capacity

: 4096 X 8 bits / 8192 X 8 bits ROM are choosed by mask option.

• RAM capacity

: 244 X 4 bits.

• Input port

: 1 port (P0). P0(0..3) and IDLE releasing function are available by mask option.

• Bidirection port

: 2 ports (P4, P8). P4.0 and SOUND is available by mask option. P4.1 is shared with

HTC external input. P8(0..3) and IDLE releasing function are available by mask

option.

• 12-bit timer/counter

: Two 12-bit timer/counters are programmable for timer, event counter and pulse width

measurement.

• High speed timer/counter : One 8-bit high speed timer/counters is programmable for auto load timer, melody

output and pulse width measurement.

• Built-in time base counter : 22 stages.

• Subroutine nesting

: Up to 13 levels.

• Interrupt

: External . . . . . 2 input interrupt sources.

Internal . . . . . . 2 Timer overflow interrupts, 1 time base interrupt.

1 high speed timer overflow interrupt.

• LCD driver

: 32 X 4 dots, 1/4duty, 1/3duty, 1/2duty, static, 1/2 bias, 1/3 bias; 6 options selectable.

• Power saving function : SLOW, IDLE, STOP operation mode.

• Package type

: Chip form

61 pins.

QFP

100 pins.

PDIP

42 pins.

APPLICATIONS

APPLICATIONS

APPLICATIONS

APPLICATIONS

APPLICATIONS

EM73P461A is suitable for application in family applicance, consumer products, hand held games and the toy

controller.