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EM73469A

ELAN Microelectronics Corp
Part Number EM73469A
Manufacturer ELAN Microelectronics Corp
Description 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Published Apr 2, 2005
Detailed Description EM73469A 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT inary Prelim GENERAL DESCRIPTION EM73469A is an advanced single chip CM...
Datasheet PDF File EM73469A PDF File

EM73469A
EM73469A

Overview
EM73469A 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT inary Prelim GENERAL DESCRIPTION EM73469A is an advanced single chip CMOS 4-bit micro-controller.
It contains 4K-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.
EM73469A also contains 6 interrupt sources, 1 input port, 2 bidirection ports, LCD display (32x4), and one high speed timer/counter with melody output.
EM73469A has plentiful operating modes (SLOW, IDLE, STOP) intended to reduce the power consumption.
FEATURES • Operation voltage • Clock source : 1.
2V to 1.
8V.
: 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.
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.
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, 1/4, 1/3, 1/2 static six kinds of duty selectable, 1/2 bias, 1/3 bias.
Power saving function : SLOW, IDLE, STOP op...


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