R
EM6682
Table of Contents
8.4.2
8.4.3
8.5
8.6
PWM Characteristics__________________29
PWM example_______________________29
COUNTER SETUP _____________________ 30
10-BIT COUNTER REGISTERS ____________ 31
FEATURES______________________________ 1
DESCRIPTION ___________________________ 1
EM6682 AT A GLANCE ____________________ 2
9.
9.1
SVLD / 4-BIT ADC __________________ 33
SVLD TRIM: ________________________ 35
1.
PIN DESCRIPTION FOR EM6682_______ 4
2.
OPERATING MODES ________________ 5
ACTIVE MODE_______________________ 5
STANDBY (HALT) MODE _______________ 5
SLEEP MODE _______________________ 5
FIGURE 25. SVLD TIMING IN “ADC” MODE WHEN
SVLDEN SET @ “1” ___________________ 36
2.1
2.2
2.3
10.
RAM _____________________________ 37
11.
INTERRUPT CONTROLLER __________ 38
3.
POWER SUPPLY____________________ 6
11.1 INTERRUPT CONTROL REGISTERS _________ 39
4.
RESET ____________________________ 7
POR WITH POWER-CHECK RESET_________ 8
INPUT PORT A RESET __________________ 9
DIGITAL WATCHDOG TIMER RESET ________ 9
SLEEP COUNTER RESET _______________ 10
WAKE-UP ON CHANGE ________________ 10
THE CPU STATE AFTER RESET __________ 10
12.
13.
14.
PERIPHERAL MEMORY MAP _________ 40
ACTIVE SUPPLY CURRENT TEST _____ 43
MASK OPTIONS____________________ 44
4.1
4.2
4.3
4.4
4.5
4.6
14.1 INPUT / OUTPUT PORTS ________________ 44
14.1.1 Port A Metal Options __________________44
14.1.2 RC oscillator Frequency Option _________46
14.1.3 Debouncer Frequency Option ___________46
14.1.4 Power-Check Level Option _____________46
14.1.5 ADC/SVLD Voltage Level #15___________46
14.1.6 Counter Update option ________________46
14.1.7 No regulator option ___________________47
14.1.8 SVLD level set_______________________47
14.1.9 Bit 0 don’t care ______________________47
14.1.10 Counter clock source _________________48
14.1.11 Power check level init _________________48
5.
OSCILLATOR AND PRESCALER _____ 11
RC OSCILLATOR OR EXTERNAL CLOCK_____ 11
SPECIAL 4 STAGE FREQUENCY DIVIDER ____ 12
PRESCALER ________________________ 13
5.1
5.2
5.3
6.
6.1
6.2
INPUT AND OUTPUT PORT A ________ 14
INPUT / OUTPUT PORT OVERVIEW ________ 14
PORTA AS INPUT AND ITS MULTIPLEXING ___ 15
Debouncer __________________________15
IRQ on Port A _______________________16
Pull-up/down ________________________16
Software test variables ________________17
Port A for 10-Bit Counter _______________17
Port A Wake-Up on change_____________17
Port A for Serial Interface ______________17
Port A for External Reset_______________17
Port PA[4] as Comparator Input _________17
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
15.
TYPICAL BEHAVIOUR_______________ 49
15.1 TEMPERATURE_______________________ 49
15.2 VOLTAGE___________________________ 50
16.
ELECTRICAL SPECIFICATION ________ 51
16.1 ABSOLUTE MAXIMUM RATINGS ___________ 51
16.2 HANDLING PROCEDURES _______________ 51
16.3 STANDARD OPERATING CONDITIONS_______ 51
16.4 DC CHARACTERISTICS - POWER SUPPLY ___ 52
16.5 ADC______________________________ 53
16.6 SVLD _____________________________ 54
16.7 DC CHARACTERISTICS - I/O PINS _________ 55
16.8 RC OSCILLATOR FREQUENCY ____________ 56
16.9 SLEEP COUNTER RESET - SCR __________ 57
6.2.10 Reset and Sleep on Port A _____________17
6.2.11 Port A Blocked Inputs _________________17
6.3
PORTA AS OUTPUT AND ITS MULTIPLEXING _ 18
CMOS / Nch. Open Drain Output ________18
PORT A REGISTERS___________________ 19
6.3.1
6.4
7.
7.1
7.2
SERIAL PORT _____________________ 21
GENERAL FUNCTIONAL DESCRIPTION______ 22
DETAILED FUNCTIONAL DESCRIPTION______ 22
Output Modes _______________________23
SERIAL INTERFACE REGISTERS __________ 24
17.
DIE, PAD LOCATION AND SIZE _______58
18.
PACKAGE DIMENSIONS_____________ 59
7.2.1
7.3
18.1 SO-8/14 ___________________________ 59
18.2 TSSOP-8/14 _______________________ 60
8.
10-BIT COUNTER __________________ 25
19.
ORDERING INFORMATION___________ 61
8.1
8.2
8.3
8.4
FULL AND LIMITED BIT COUNTING ________ 25
FREQUENCY SELECT AND UP/DOWN COUNTING26
EVENT COUNTING____________________ 27
PULSE WIDTH MODULATION (PWM) ______ 27
How the PWM Generator works. _________28
19.1 PACKAGE MARKING ___________________ 61
19.2 CUSTOMER MARKING__________________ 61
8.4.1
3
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