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EM78P374N Schematic ( PDF Datasheet ) - ELAN Microelectronics

Teilenummer EM78P374N
Beschreibung 8-Bit Microcontroller
Hersteller ELAN Microelectronics
Logo ELAN Microelectronics Logo 




Gesamt 30 Seiten
EM78P374N Datasheet, Funktion
EM78P374N
8-Bit Microcontroller
Product
Specification
DOC. VERSION 1.5
ELAN MICROELECTRONICS CORP.
August 2014






EM78P374N Datasheet, Funktion
Contents
6.7.4 Programmable Divider Output (PDO) Mode
and Pulse Width Modulation (PWM) Mode ...................................................... 81
6.7.5 Buzzer Mode .....................................................................................................82
6.8 PWM Module .................................................................................................. 83
6.8.1 Overview............................................................................................................83
6.8.2 Control Register ................................................................................................84
6.8.3 Increment Timer Counter (TMRX: TMRAH/TMRAL,
TMRBH/TMRBL, TMRCH/TMRCL, or TMRDH/TMRDL) ................................. 85
6.8.4 PWM Time Period (PRDX: PRDAL/H, PRDBL/H, PRDCL/H, or PRDDL/H) ....85
6.8.5 PWM Duty Cycle (DTX: DTAH/DTAL, DTBH/DTBL, DTCH/DTCL,
or DTDH/DTDL)................................................................................................ 86
6.8.6 Comparator X ....................................................................................................87
6.8.7 PWM Programming Process/Steps ...................................................................87
6.9 Comparator..................................................................................................... 88
6.9.1 External Reference Signal.................................................................................89
6.9.2 Comparator Outputs ..........................................................................................89
6.9.3 Programming the Related Registers .................................................................90
6.9.4 Comparator Interrupt .........................................................................................90
6.9.5 Wake-up from Sleep Mode................................................................................90
6.10 I2C Function ................................................................................................... 90
6.10.1 7-Bit Slave Address ...........................................................................................92
6.10.2 10-Bit Slave Address .........................................................................................93
6.10.3 Master Mode 12C Transmit ...............................................................................96
6.10.4 Slave Mode 12C Transmit .................................................................................96
6.11 LVD (Low Voltage Detector)............................................................................ 97
6.11.1 Low Voltage Reset (LVR) .................................................................................97
6.11.2 Low Voltage Detect ...........................................................................................97
6.12 Oscillator ........................................................................................................ 99
6.12.1 Oscillator Modes................................................................................................99
6.12.2 Crystal Oscillator/Ceramic Resonators (XTAL) .................................................99
6.12.3 Internal RC Oscillator Mode ............................................................................100
6.13 Power-on Considerations.............................................................................. 101
6.14 External Power-on Reset Circuit ................................................................... 101
6.15 Residue-Voltage Protection .......................................................................... 101
6.16 Code Option ................................................................................................. 102
6.16.1 Code Option Register (Word 0).......................................................................102
6.16.2 Code Option 1 (Word 1) ..................................................................................103
6.16.3 Code Option 2 (Word 2) ..................................................................................104
6.16.4 Code Option 3 (Word 3) ..................................................................................104
6.16.5 Code Option F (Word F)..................................................................................105
6.17 Instruction Set............................................................................................... 105
vi Product Specification (V1.4) 08.27.2014

6 Page









EM78P374N pdf, datenblatt
EM78P374N
8-bit Microcontroller
(Continuation)
Pin Name Function Input Type Output
Type
P57/ADC7/
OSCI/
RCOUT
P57
ADC7
OSCI
RCOUT
ST
AN
XTAL
-
CMOS
-
-
CMOS
Description
Bidirectional I/O pin with programmable pull-down,
pull-high, open-drain, high sink, high drive, and pin
change wake-up.
ADC Input 7
Clock input of crystal/ resonator oscillator
Clock output of internal RC oscillator
P60/C2-
P60
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
C2- AN
- Inverting end of Comparator 2 / OP2
P61/C2+/
SCL
P62/CO2/
SDA
P61
C2+
SCL
P62
CO2
SDA
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
AN - Non-inverting end of Comparator 2/OP2
ST CMOS I2C serial clock input/output (SCL)
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
- CMOS Output of Comparator 2
ST CMOS I2C serial data input/output (SDA)
P63/
PWMC1
P63
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
PWMC1 - CMOS PWMC1 ouput (complementary PWM)
P64/
PWMB1
P64
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up
PWMB1 - CMOS PWMB1 ouput (complementary PWM)
P65/
PWMA1
P65
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
PWMA1 - CMOS PWMA1 ouput (complementary PWM)
P66/INT
P66
Bidirectional I/O pin with programmable pull-down,
ST CMOS pull-high, open-drain, high sink, high drive, and pin
change wake-up.
INT ST
External interrupt pin
P67/
/RESET
P67
Bidirectional I/O pin with programmable pull-down,
ST CMOS high sink, and pin change wake-up. It is always
open-drain
/RESET
ST
- Reset pin
4 Product Specification (V1.4) 08.27.2014
(This specification is subject to change without further notice)

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