EM6621 Datasheet, PDF (1/69 Pages) EM Microelectronic - MARIN SA – Ultra Low Power Microcontroller with 4x20 LCD Driver

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EM6621
Ultra Low Power Microcontroller with 4x20 LCD Driver
Features
• Low Power - 2.6 µA active mode, LCD On
- 0.5 µA standby mode, LCD Off
- 0.1 µA sleep mode
@ 1.5 V, 32 KHz, 20 ºC
• Low Voltage - 1.2 to 3.6 V
• 2 clocks per instruction cycle
• 72 basic instructions
• ROM 4k x 16 bits
• RAM 128 x 4 bits
• Max. 12 inputs ; port A, port B, port SP
• Max. 8 outputs ; port B, port SP
• Voltage Level Detector, 8 levels software
selectable from 1.2 V up to 4.0 V
• Melody, 7 tones + silence inclusive 4-bit timer
• Universal 10-bit counter, PWM, event counter
• Prescaler down to 1 second ( crystal = 32 KHz )
• 1/1000 sec 12 bit binary coded decimal counter
with hard or software start/stop function
• LCD 20 Segments, 3 or 4 times multiplexed
• 3 wire serial port , 8 bit, master and slave mode
• 5 external interrupts (port A, serial interface)
• 8 internal interrupts (3x prescaler, BCD counter
2x10-bit counter, melody timer, serial interface)
• timer watchdog and oscillation supervisor
Description
The EM6621 is an advanced single chip low cost
CMOS 4-bit microcontroller. It contains ROM, RAM,
LCD driver, power on reset, watchdog timer,
oscillation detection circuit, 10-bit up/down and
event counter, 1ms BCD counter, prescaler, voltage
level detector (Vld), serial interface and several
clock functions. The low voltage feature and low
power consumption make it the most suitable
controller for battery, stand alone and mobile
equipment. The EM6621 is manufactured using EM
Microelectronic's advanced low power (ALP) CMOS
process.
Typical Applications
• Timing device
• Automotive controls with display
• Intelligent display driver
• Measurement equipment
• Domestic appliance
• Interactive system with display
• Timer / sports timing devices
• Bicycle computers
• Safety and security devices
Figure 1. Architecture
Figure 2. Pin Configuration, TQFP52 10 * 10 * 1 mm
Copyright  2002, EM Microelectronic-Marin SA
1
03/02 REV. D/444
www.emmicroelectronic.com