em6521 EM Microelectronic, em6521 Datasheet - Page 3

• Manufacturer Part Number: em6521
• Description: Mfp Version Of Em6621 Ultra Low Power Microcontroller With 4x20 Lcd Driver
• Manufacturer: EM Microelectronic

Table of Contents
Features
Description
Typical
EM6521 at a glance
1
2
3
4
5
6
7
8
Copyright © 2005, EM Microelectronic-Marin SA
1.1
2.1
2.2
2.3
4.1
4.2
4.3
4.4
4.5
5.1
5.2
6.1
6.2
6.3
6.4
6.5
6.6
6.7
7.1
7.2
7.3
8.1
8.2
8.3
8.4
8.5
Pin Description for EM6521
Operating Modes
Power Supply
Reset
Oscillator and Prescaler
Input and Output Ports
6.2.1
6.2.2
6.2.3
6.2.4
6.4.1
6.4.2
6.4.3
6.4.4
6.6.1
6.6.2
6.6.3
6.6.4
6.6.5
6.6.6
6.6.7
Melody, Buzzer
7.1.1
7.1.2
10-bit Counter
8.5.1
Programming Connections
Active Mode
Standby Mode
Sleep Mode
Oscillation Detection Circuit
Reset Terminal
Input Port A Reset Function
Digital Watchdog Timer Reset
CPU State after Reset
Oscillator
Prescaler
Ports Overview
Port A
Port A Registers
Port B
Port B Registers
Port Serial
Serial Interface Registers
4-Bit Timer
Programming Order
Melody Registers
Full and Limited Bit Counting
Frequency Select and Up/Down Counting
Event Counting
Compare Function
Pulse Width Modulation (PWM)
Applications
R
IRQ on Port A
Pull-up or Pull-down
Software Test Variables
Port A for 10-Bit Counter and MSC
Input / Output Mode
Pull-up or Pull-down
CMOS / NCH. Open Drain Output
PWM and Frequency Output
4-bit Parallel I/O
Pull-up or Pull-down
Nch. Open Drain Outputs
General Functional Description
Detailed Functional Description
Output Modes
Reset and Sleep on Port SP
Single Run Mode
Continuos Run Mode
How the PWM Generator works.
1 0
1 2 H
1 0
1 3 H
1 0
1 4 H
1 1
1 5 H
1 1
1 6 H
1 2
1 7 H
1 2
1 8 H
1 2
1 9 H
1 4
2 0 H
1 4
2 1 H
1 5
2 2 H
1 6
2 7 H
1 8
2 8 H
2 0
3 3 H
2 1
3 4 H
2 6
4 2 H
2 8
4 3 H
2 8
4 4 H
3 0
4 7 H
3 0
4 8 H
3 2
4 9 H
3 2
5 0 H
3 3
5 1 H
3 4
5 2 H
3 4
5 3 H
3 4
5 4 H
1 5
2 3 H
1 6
2 4 H
1 6
2 5 H
1 6
2 6 H
1 8
2 9 H
1 9
3 0 H
1 9
3 1 H
2 0
3 2 H
2 1
3 5 H
2 2
3 6 H
2 3
3 7 H
2 3
3 8 H
2 4
3 9 H
2 4
4 0 H
2 5
4 1 H
2 9
4 5 H
2 9
4 6 H
3 5
5 5 H
1
0 H
1
1 H
1
2 H
2
3 H
4
4 H
6
5 H
7
6 H
7
7 H
7
8 H
7
9 H
8
1 0 H
9
1 1 H
9
10
11
12
13
14
15
16
17
18
19
20
21
22
3
8.6
8.7
9.1
9.2
9.3
9.4
9.5
10.1
11.1
12.1
14.1
14.2
14.3
14.4
18.1
19.1
19.2
19.3
19.4
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
20.10
20.11
22.1
8.5.2
Millisecond Counter
Interrupt Controller
Supply Voltage Level Detector
Strobe Output
RAM
LCD Driver
Peripheral Memory Map
Option Register Memory Map
Active Supply Current Test
Mask Options
18.1.1
18.1.2
18.1.3
18.1.4
18.1.5
18.1.6
Measured Electrical Behaviors
EM6521 Electrical Specification
Pad Location Diagram
Package & Ordering information
Counter Setup
10-bit Counter Registers
PA[3] Input for MSC
IRQ from MSC
MSC-Modes
Mode selection
Millisecond Counter Registers
Interrupt Control Registers
SVLD Register
Strobe Register
LCD Control
LCD Addressing
Free Segment Allocation
LCD Registers
Input / Output Ports
IDD Current
Regulator Voltage
Pull Resistors
Output currents
Absolute Maximum Ratings
Handling Procedures
Standard Operating Conditions
DC Characteristics - Power Supply
Supply Voltage Level Detector
Oscillator
DC characteristics - I/O Pins
LCD SEG[20:1] Outputs
LCD Com[4:1] Outputs
Ordering Information
DC Output Component
LCD Voltage Multiplier
PWM Characteristics
Port A Metal Options
Port B Metal Options
Port SP Metal Options
Voltage Regulator Option
Debouncer Frequency Option
User defined LCD Segment Allocation
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EM6521
3 6
5 7 H
3 6
5 8 H
3 8
5 9 H
3 8
6 0 H
3 8
6 1 H
3 9
6 2 H
3 9
6 3 H
4 1
6 4 H
4 2
6 5 H
4 3
6 6 H
4 4
6 7 H
4 4
6 8 H
4 5
6 9 H
4 5
7 0 H
4 6
7 1 H
4 7
7 2 H
4 8
7 3 H
4 8
7 4 H
4 9
7 5 H
4 9
7 6 H
5 1
7 7 H
5 5
7 8 H
5 6
7 9 H
5 7
8 0 H
5 7
8 1 H
6 1
8 8 H
6 1
8 9 H
6 1
9 0 H
6 1
9 1 H
6 2
9 2 H
6 3
9 3 H
6 3
9 4 H
6 3
9 5 H
6 3
9 6 H
6 3
9 7 H
6 4
9 8 H
6 4
9 9 H
6 5
1 0 0 H
6 6
1 0 1 H
6 6
1 0 2 H
6 6
1 0 3 H
6 6
1 0 4 H
6 7
1 0 5 H
6 8
1 0 6 H
6 8
1 0 7 H
3 5
5 6 H
5 7
8 2 H
5 8
8 3 H
5 9
8 4 H
5 9
8 5 H
6 0
8 6 H
6 0
8 7 H