EM73361A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
GENERAL DESCRIPTION
EM73361A is an advanced single chip CMOS 4-bit micro-controller. It contains 3K-byte ROM, 52-nibble RAM,
4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/counters for the kernel function.
EM73361A also contains 3 interrupt sources, 1 input port, 4 bidirection I/O ports, built-in watch-dog-timer
counter, tone generator and LCD driver (27x3 to 13x3).
Except low-power consumption and high speed, EM73361A also have a sleep mode operation for power saving.
FEATURES
• Operation voltage
• Clock source
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: 2.2V to 3.6V(clock frequency : 32K Hz).
: Single clock system for crystal, connect a external resistor or external clock
source available by mask option.
Instruction set
: 109 powerful instructions.
Instruction cycle time
: 122µs for 32K Hz.
ROM capacity
: 3072 X 8 bits.
RAM capacity
: 52 X 4 bits.
Input port
: 1 port (P0)(Pull-up and pull-down resistor with wakeup function available by
mask option).
Bidirection port
: 4 ports (P4, P5, P6, P7) are available by mask option. (each I/O pin is push-pull
and open-drain available by mask option) P4.0 is high current pin (P4.0 and
TONE available by mask option). P4.2~P4.3, P5, P6 and P7 are shared with
SEG26-SEG13 by mask option.
12-bit timer/counter
: Two 12-bit timer/counters are programmable for timer mode.
Low voltage reset (LVR) : Reset at 1.5V, and reset release at 1.8V.
Tone generator
: There is a built-in tone generator.
Built-in time base counter : 22 stages.
Subroutine nesting
: Up to 13 levels.
Interrupt
: External . . . . . 2 External interrupt (INT0, INT1).
Internal . . . . . . 2 Timer overflow interrupts.
1 Time base interrupt.
LCD driver
: 27 X 3 to 13 X 3 dots available by mask option. Capacitor divider and resistor
divider are available by mask option.1/3, 1/2 and static three kinds of duty (1/2
bias) selectable. The programming method of LCD driver is I/O mapping.
Built-in watch-dog-timer : The WDT is enabled or disabled by mask option.
Power saving function
: Sleep mode and Hold mode.
Package type
: EM73361AAH
Chip form 46 pins.
EM73361AAQ
QFP
100 pins.
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APPLICATIONS
EM73361A is suitable for application in family appliance, consumer products, hand held games and the toy
controller.
* This specification are subject to be changed without notice.
10.8.2001
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EMC [ ELAN MICROELECTRONICS CORP ]
