LCD Driver. EM6520 Datasheet

EM6520 Driver. Datasheet pdf. Equivalent

Part EM6520
Description MFP version of EM6620 Ultra Low Power Microcontroller 4x8 LCD Driver
Feature EM MICROELECTRONIC - MARIN SA EM6520 MFP version of EM6620 Ultra Low Power Mic.
Manufacture EM Microelectronic
Total Page 30 Pages
Download EM6520 Datasheet

MFP version of EM6620
Ultra Low Power Microcontroller 4x8 LCD Driver
Low Power - 8 µA active mode, LCD On
- 1.1 µA standby mode, LCD Off
- 0.1 µA sleep mode
@ 3 V, 32 kHz, 25°C
Large Voltage range, 2 to 5.5 V
SVLD, default (2.4V)
EEPROM, 2048 × 16 bits
RAM, 64 × 4 bits
2 clocks per instruction cycle
72 basic instructions
Oscillation supervisor
Timer watchdog (2 sec)
Max. 8 inputs ; port A, port B
max. 4 outputs ; port B
LCD 8 segments, 3 or 4 times multiplexed
Universal 10-bit counter, PWM, event counter
Prescaler down to 1 Hz (crystal = 32 KHz)
1/1000 sec, 12 bit binary coded decimal counter
with hard or software start/stop function
Frequency output 1Hz, 2048 Hz, 32 KHz, PWM
7 internal interrupt sources (BCD counter,
2×10-bit counter, 3× prescaler, SVLD)
5 external interrupt sources (port A, compare)
The EM6520 is an advanced single chip CMOS 4-
bit microcontroller. It contains EEPROM, RAM,
power on reset, watchdog timer, oscillation
detection circuit, 10 bit up/down counter,
Millisecond counter, prescaler, voltage level detec-
tor (SVLD), compare input, frequency output, LCD
driver 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 EM6520 is manufactured
using EM Microelectronic’s Advanced Low Power
(ALP) CMOS Process.
Typical Applications
Timing device
Medical applications
Domestic appliance
Timer / sports timing devices
Safety and security devices
Automotive controls with display
Measurement equipment
Interactive system with display
Bicycle computers
Figure 1. Architecture
Figure 2. Pin Configuration
Copyright 2002, EM Microelectronic-Marin SA
03/02 REV. D/449

EM6520 at a glance
Power Supply
- Low voltage low power architecture
including internal voltage regulator
- 2.0 ... 5.5 V battery voltage
- 8 µA in active mode (Xtal, LCD on, 25°C)
- 1.1 µA in standby mode (Xtal, LCD off, 25°C)
- 0.1 µA in sleep mode (25°C)
- 32 KHz Oscillator
- 64 x 4 bit, direct addressable
- 2048 x 16 bits programmable with EM’s
standard MFP programming box
- 4 bit RISC architecture
- 2 clock cycles per instruction
- 72 basic instructions
Main Operating Modes and Resets
- Active Mode (CPU is running)
- Standby Mode (CPU in halt)
- Sleep Mode (no clock, reset state)
- Initial reset on power on (POR)
- Watchdog reset (logic and oscillation watchdogs)
- Reset with input combination on port A (register
Liquid Crystal Display Driver (LCD)
- 8 segments 3 or 4 times multiplexed
- Internal or external voltage multiplier
- Free segment allocation architecture
(metal 2 mask)
- LCD switch off for power save
4-Bit Input Port A
- Direct input read on the port terminals
- Debouncer function available on all inputs
- Interrupt request on positive or negative edge
- Pull resistor selectable by register
- Test variables (software) for conditional jumps
- PA[0] and PA[3] are inputs for the event counter
- PA[3] is Start/Stop input for the millisecond
- Reset with input combination (register selectable)
- 15 stage system clock divider down to 1Hz
- 3 Interrupt requests; 1Hz, 32Hz or 8Hz, Blink
- Prescaler reset (4kHz to 1Hz)
4-Bit Bi-directional Port B
- All different functions bit-wise selectable
- Direct input read on the port terminals
- Data output latches
- CMOS or Nch. open drain outputs
- Pull-down or pull-up selectable
- Pull-up in Nch. open drain mode
- Selectable PWM, 32kHz, 1kHz and 1Hz output
- Dynamic Input Comparator on PB[0] (SVLD level)
Voltage Level Detector
- Default value 2.4V
- Busy flag during measure
- Interrupt request at end of measure
10-Bit Universal Counter
- 10, 8, 6 or 4 bit up/down counting
- Parallel load
- Event counting (PA[0] or PA[3])
- 8 different input clocks-
- Full 10 bit or limited (8, 6, 4 bit) compare function
- 2 interrupt requests (on compare and on 0)
- Hi-frequency input on PA[3] and PA[0]
- Pulse width modulation (PWM) output
Millisecond Counter
- 3 digits binary coded decimal counter (12 bits)
- PA[3] signal pulse width and period measurement
- Internal 1000 Hz clock generation
- Hardware or software controlled start stop mode
- Interrupt request on either 1/10 Sec or 1Sec
Interrupt Controller
- 5 external and 7 internal interrupt request sources
- Each interrupt request individually maskable
- Each interrupt flag individually resettable
- Automatic reset of each interrupt request register
after read
- General interrupt request to CPU can be disabled
- Automatic enabling of general interrupt request
flag when going into HALT mode
Copyright 2002, EM Microelectronic-Marin SA
03/02 REV. D/449

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