EM6821 Datasheet, PDF (1/68 Pages) EM Microelectronic - MARIN SA – Ultra Low Power uController with 4x20 LCD Driver

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EM MICROELECTRONIC - MARIN SA
EM6821
Ultra Low Power µController with 4x20 LCD Driver
Features
• Low Power - 1.3 µA active mode, LCD On
- 0.4 µA standby mode, LCD Off
- 0.1 µA sleep mode
@ 3 V, 32 KHz, 25 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 EM6821 is an advanced single chip low cost
CMOS 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 EM6821 is manufactured
using EM Microelectronic’a advanced low power
(ALP) CMOS process.
Typical Applications
• Timing device
• Timer / sports timing devices
• Bicycle computers
• Measurement equipment
• Domestic appliance
• Interactive system with display
• Automotive controls with display
• Safety and security devices
Figure 1. Architecture
Figure 2. Pin Configuration, TQFP52 10x10x1 mm
Copyright © 2005, EM Microelectronic-Marin SA
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