Ultra-low power microcontroller - EM Microelectronic
Description
R
EM MICROELECTRONIC - MARIN SA
EM6625
Ultra Low Power Microcontroller with 4x20 LCD Driver
Features
True Low Power
1.
6 µA active mode, LCD On 0.
4 µA standby mode, LCD Off 0.
2 µA sleep mode
@ 3 V, 32 KHz, 25 ºC
Figure 1.
Architecture
Low Supply Voltage 1.
2 V to 3.
6 V Melody, 7 tones + silence inclusive 4-bit timer Universal 10-bit counter, PWM, event counter LCD 20 segments, 3 or 4 times multiplexed Temperature compensated LCD voltage levels Built-in LCD voltage multipliers LCD frequency 32 Hz/42.
7 Hz/64 Hz 32 KHz or 128 kHz crystal oscillator 72 basic instructions 2 clocks per instruction cycle Mask 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 (VLD), 8 levels software selectable from 1.
2 V up to 4.
0 V Prescaler down to 1 second ( crystal = 32 KHz ) 1/1000 sec 12 bit binary coded decimal counter with hard or software start/stop function 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
32/128 KHz Crystal Osc
ROM 4k X 16Bit
RAM 128*4Bit
VDD Power Supply
VLD 8 Levels Power on Reset Watchdog
Prescaler
Millisecond Counter
Core EM6600
10-Bit Univ Count/Timer
Melody Generator
Interrupt Controller
Voltage Multiplier
Port A 0 1 2 3
Port B 0 1 2 3 PWM PWM
Serial Interface
LCD Controller 3, 4 X 20
Figure 2.
Pin Configuration, TQFP52
Description
The EM6625 is an ultra-low power, low voltage microcontroller with an integrated 3/4 MUX x 20 segments LCD driver and the equivalent of 8kB mask ROM.
It features temperature compensated LCD voltage levels, free LCD segment allocation and built-in voltage multipliers.
It also has a melody generator, a millisecond counter (BCD) and PWM function.
Tools include windows-based simulator and emulator.
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