EM6622

EM MICROELECTRONIC - MARIN SA EM6622 Ultra Low Power Microcontroller with 4x32 LCD Driver Features Low Power - 3.0 µA active mode, LCD On - 0.6 µA standby mode, LCD Off - 0.2 µA sleep mode @ 1.5 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 32 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 Figure 1. Architecture Description The EM6622 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 equip...