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EM6621 Datasheet(PDF) 3 Page - EM Microelectronic - MARIN SA

Part No. EM6621
Description  Ultra Low Power Microcontroller with 4x20 LCD Driver
Download  69 Pages
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Maker  EMMICRO [EM Microelectronic - MARIN SA]
Homepage  http://www.emmicroelectronic.com
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EM6621 Datasheet(HTML) 3 Page - EM Microelectronic - MARIN SA

 
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EM6621
03/02 REV. D/444
Copyright
 2002, EM Microelectronic-Marin SA
3
www.emmicroelectronic.com
Table of Contents
FEATURES _________________________________ 1
DESCRIPTION _______________________________ 1
TYPICAL APPLICATIONS ______________________ 1
EM6621 AT A GLANCE ________________________ 2
1.
PIN DESCRIPTION FOR EM6621 ____________ 4
2.
OPERATING MODES______________________ 6
2.1
ACTIVE MODE _________________________ 6
2.2
STANDBY MODE ________________________ 6
2.3
SLEEP MODE __________________________ 6
3.
POWER SUPPLY _________________________ 7
4.
RESET _________________________________ 8
4.1
OSCILLATION DETECTION CIRCUIT ___________ 9
4.2
RESET TERMINAL _______________________ 9
4.3
INPUT PORT A RESET FUNCTION ____________ 9
4.4
DIGITAL WATCHDOG TIMER RESET _________ 10
4.5
CPU STATE AFTER RESET _______________ 10
5.
OSCILLATOR AND PRESCALER ___________ 11
5.1
OSCILLATOR _________________________ 11
5.2
PRESCALER__________________________ 11
6.
INPUT AND OUTPUT PORTS ______________ 13
6.1
PORTS OVERVIEW _____________________ 13
6.2
PORT A_____________________________ 14
6.2.1
IRQ on Port A ___________________ 14
6.2.2
Pull-up or Pull-down ______________ 15
6.2.3
Software Test Variables ___________ 15
6.2.4
Port A for 10-Bit Counter and MSC ___ 15
6.3
PORT A REGISTERS ____________________ 15
6.4
PORT B_____________________________ 17
6.4.1
Input / Output Mode_______________ 17
6.4.2
Pull-up or Pull-down ______________ 18
6.4.3
CMOS / NCH. Open Drain Output____ 18
6.4.4
PWM and Frequency Output________ 19
6.5
PORT B REGISTERS ____________________ 19
6.6
PORT SERIAL_________________________ 20
6.6.1
4-bit Parallel I/O _________________ 20
6.6.2
Pull-up or Pull-down ______________ 21
6.6.3
Nch. Open Drain Outputs __________ 22
6.6.4
General Functional Description______ 22
6.6.5
Detailed Functional Description _____ 23
6.6.6
Output Modes ___________________ 23
6.6.7
Reset and Sleep on Port SP ________ 24
6.7
SERIAL INTERFACE REGISTERS ____________ 25
7.
MELODY, BUZZER ______________________ 27
7.1
4-BIT TIMER _________________________ 27
7.1.1
Single Run Mode_________________ 28
7.1.2
Continuos Run Mode______________ 28
7.2
PROGRAMMING ORDER __________________ 29
7.3
MELODY REGISTERS____________________ 29
8.
10-BIT COUNTER _______________________ 31
8.1
FULL AND LIMITED BIT COUNTING___________ 31
8.2
FREQUENCY SELECT AND UP/DOWN COUNTING 32
8.3
EVENT COUNTING _____________________ 33
8.4
COMPARE FUNCTION ___________________ 33
8.5
PULSE WIDTH MODULATION (PWM) ________ 33
8.5.1
How the PWM Generator works._____ 34
8.5.2
PWM Characteristics______________ 34
8.6
COUNTER SETUP ______________________35
8.7
10-BIT COUNTER REGISTERS ______________35
9.
MILLISECOND COUNTER _________________37
9.1
PA[3] INPUT FOR MSC __________________37
9.2
IRQ FROM MSC _______________________37
9.3
MSC-MODES _________________________38
9.4
MODE SELECTION ______________________38
9.5
MILLISECOND COUNTER REGISTERS _________40
10.
INTERRUPT CONTROLLER ______________41
10.1
INTERRUPT CONTROL REGISTERS ___________42
11.
SUPPLY VOLTAGE LEVEL DETECTOR ____43
11.1
SVLD REGISTER ______________________43
12.
STROBE OUTPUT______________________44
12.1
STROBE REGISTER _____________________44
13.
RAM _________________________________45
14.
LCD DRIVER __________________________46
14.1
LCD CONTROL ________________________47
14.2
LCD ADDRESSING _____________________47
14.3
FREE SEGMENT ALLOCATION ______________48
14.4
LCD REGISTERS_______________________48
15.
PERIPHERAL MEMORY MAP ____________50
16.
OPTION REGISTER MEMORY MAP _______54
17.
ACTIVE SUPPLY CURRENT TEST ________55
18.
MASK OPTIONS _______________________56
18.1
INPUT / OUTPUT PORTS __________________56
18.1.1
Port A Metal Options ______________56
18.1.2
Port A Metal Options ______________56
18.1.3
Port B Metal Options ______________57
18.1.4
Port SP Metal Options _____________58
18.1.5
Voltage Regulator Option ___________59
18.1.6
Debouncer Frequency Option _______59
18.1.7
User defined LCD Segment Allocation 59
19.
TEMP. AND VOLTAGE BEHAVIORS _______60
19.1
IDD CURRENT (TYPICAL) _________________60
19.2
PULL-DOWN RESISTANCE (TYPICAL) _________60
19.3
PULL-UP RESISTANCE (TYPICAL)____________61
19.4
OUTPUT CURRENTS (TYPICAL) _____________61
20.
ELECTRICAL SPECIFICATION ___________62
20.1
ABSOLUTE MAXIMUM RATINGS _____________62
20.2
HANDLING PROCEDURES _________________62
20.3
STANDARD OPERATING CONDITIONS _________62
20.4
DC CHARACTERISTICS - POWER SUPPLY _____62
20.5
SUPPLY VOLTAGE LEVEL DETECTOR _________63
20.6
OSCILLATOR __________________________63
20.7
DC CHARACTERISTICS - I/O PINS ___________64
20.8
LCD SEG[20:1] OUTPUTS _______________65
20.9
LCD COM[4:1] OUTPUTS ________________65
20.10
DC OUTPUT COMPONENT ______________65
20.11
LCD VOLTAGE MULTIPLIER _____________65
21.
DIE, PAD LOCATION AND SIZE___________66
22.
PACKAGE & ORDERING INFORMATION ___67
22.1
ORDERING INFORMATION _________________68
22.2
PACKAGE MARKING _____________________68
22.3
CUSTOMER MARKING____________________68
23.
SPEC UPDATE ________________________69


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