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
V
DD
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. A flexible MFP
version is also available for development stage.
Due to its very low current consumption, the EM6625 is
ideal for use in battery-operated and field-powered
applications.
TQFP52
STROBE
BUZZER
42
QOUT
VREG
VBAT
PA[3]
41
PA[2]
40
VSS
48
C1A
C1B
C2A
C2B
QIN
46
52
51
50
49
47
45
44
VL1
VL2
VL3
COM[1]
COM[2]
COM[3]
COM[4]
SEG[20]
SEG[19]
1
2
3
4
5
6
7
8
9
10
11
12
43
39
38
37
36
35
34
PA[1]
PA[0]
PB[3]
PB[2]
PB[1]
PB[0]
PS[3]
PS[2]
PS[1]
PS[0]
TEST
RESET
SEG[1]
EM6625
33
32
31
30
29
28
Typical Applications
Household appliance
Timer / sports timing devices
Medical devices
Interactive system with display
Automotive controls with display
Measurement equipment
Bicycle computers
Safety and security devices
SEG[18]
SEG[17]
SEG[16]
SEG[15]
14
15
16
17
18
19
20
21
22
23
24
25
SEG[3]
SEG[14]
SEG[13]
SEG[12]
SEG[11]
SEG[10]
SEG[9]
SEG[8]
SEG[7]
SEG[6]
SEG[5]
SEG[4]
Copyright
©
2005, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
SEG[2]
26
13
27
EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
