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EM6821 Datasheet(PDF) 3 Page - EM Microelectronic - MARIN SA

Part No. EM6821
Description  Ultra Low Power uController with 4x20 LCD Driver
Download  68 Pages
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Maker  EMMICRO [EM Microelectronic - MARIN SA]
Homepage  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM6821 Datasheet(HTML) 3 Page - EM Microelectronic - MARIN SA

  EM6821 Datasheet HTML 1Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 2Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 3Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 4Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 5Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 6Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 7Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 8Page - EM Microelectronic - MARIN SA EM6821 Datasheet HTML 9Page - EM Microelectronic - MARIN SA Next Button
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EM6821
Copyright
© 2005, EM Microelectronic-Marin SA
3
www.emmicroelectronic.com
Table of Contents
FEATURES __________________________________1
DESCRIPTION _______________________________1
TYPICAL APPLICATIONS _______________________1
EM6821 AT A GLANCE _________________________2
1.
PIN DESCRIPTION FOR EM6821 _____________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
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.
TQF52 PACKAGE DIMENSIONS __________ 67
23.
ORDERING INFORMATION ______________ 68
23.1
PACKAGED DEVICES ______________________ 68
23.2
DIE FORM _____________________________ 68
24.
SPEC UPDATEERROR! BOOKMARK NOT DEFINED.


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