R
EM MICROELECTRONIC - MARIN SA
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DataSheet4U.
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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 s...