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PDF EM78P346N Data sheet ( Hoja de datos )
| Número de pieza | EM78P346N | |
| Descripción | 8-Bit Microprocessor | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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EM78P346N
8-Bit Microprocessor
with OTP ROM
Product
Specificationwww.DataSheet.net/
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
December 2007
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
Contents
6.8 Dual Sets of PWM (Pulse Width Modulation) .................................................. 56
6.8.1 Overview........................................................................................................... 56
6.8.2 Increment Timer Counter .................................................................................. 57
6.8.3 PWM Time Period............................................................................................. 57
6.8.4 PWM Duty Cycle............................................................................................... 58
6.8.5 Comparator X ................................................................................................... 58
6.8.6 PWM Programming Process/Steps .................................................................. 58
6.9 Timer .............................................................................................................. 58
6.9.1 Overview........................................................................................................... 58
6.9.2 Function Description ......................................................................................... 59
6.9.3 Programming the Related Registers ................................................................ 60
6.9.3.1 Related Control Registers of TMR1, TMR2, and TMR3 .................... 60
6.9.4 Timer Programming Process/Steps .................................................................. 60
6.10 Comparator..................................................................................................... 60
6.10.1 External Reference Signal................................................................................ 61
6.10.2 Comparator Outputs ......................................................................................... 61
6.10.3 Using Comparator as an Operation Amplifier ................................................... 62
6.10.4 Comparator Interrupt ........................................................................................ 62
6.10.5 Wake-up from Sleep Mode ............................................................................... 62
6.11 Oscillator ........................................................................................................ 62
6.11.1 Oscillator Modes ............................................................................................... 62
6.11.2 Crystal Oscillator/Ceramic Resonatorswww.DataSheet.net/ (Crystal) .............................................. 63
6.11.3 External RC Oscillator Mode ............................................................................ 64
6.11.4 Internal RC Oscillator Mode ............................................................................. 65
6.12 Power-on Considerations................................................................................ 66
6.12.1 External Power-on Reset Circuit ...................................................................... 66
6.12.2 Residual Voltage Protection ............................................................................. 67
6.13 Code Option ................................................................................................... 68
6.13.1 Code Option Register (Word 0) ........................................................................ 68
6.13.2 Code Option Register (Word 1) ........................................................................ 69
6.13.3 Code Option and Customer ID Register (Word 2)............................................ 70
6.14 Low Voltage Detector...................................................................................... 71
6.14.1 Low Voltage Reset............................................................................................ 71
6.14.2 Low Voltage Detector........................................................................................ 71
6.14.2.1 Bank 1 R6 (LVD Control Register)..................................................... 71
6.14.3 Programming Process ...................................................................................... 72
6.15 Instruction Set................................................................................................. 73
7 Absolute Maximum Ratings.................................................................................. 76
8 DC Electrical Characteristics................................................................................ 76
8.1 AD Converter Characteristic ........................................................................... 78
8.2 Comparator (OP) Characteristic...................................................................... 79
9 AC Electrical Characteristic.................................................................................. 79
10 Timing Diagrams ................................................................................................... 80
Product Specification (V1.0) 12.25.2007
•v
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page 
EM78P346N
8-Bit Microprocessor with OTP ROM
4.3 EM78P346NK24/SO24/SS24
Symbol
Pin No. Type
Function
P50~P57
P60~P67
P70~P75
13, 15~17
19~22
I/O
8-bit General purpose input/output pins
Default value at power-on reset
4~6
8~12
8-bit General purpose input/output pins
I/O Default value at power-on reset
3, 2, 1, 24
23, 14
6-bit General purpose input/output pins
I/O Default value at power-on reset
P75 is open drain for output port
INT 13 I External interrupt pin triggered by falling edge
ADC0~ADC7
PWM1
PWM2
PWM3
VREF
4~6
8~12
15
16
17
17
CIN-
CIN+
CO
22
3
4
/RESET
14
TCC
OSCI
21
20
OSCO
19
I
8-bit Analog to Digital Converter
Defined by ADCON (R9)<0:2>
O
Pulse width modulation outputs
Defined by PWMCON (IOC80)<5 : 7>
I
External reference voltage for ADC
Defined by ADCON (R9) <7>
“-“ : the input pin of Vin- of the comparator
I
“+” : the input pin of Vin+ of the comparator
I
O Pin CO is the comparator outputwww.DataSheet.net/
Defined by CMPCON (IOCA) <0:1>
General-purpose Input only
If it remains at logic low, the device will be reset.
I Wake-up from sleep mode when pin status changes.
Voltage on /RESET must not exceed Vdd during normal
mode.
I
Real time clock/counter with Schmitt Trigger input pin. It
must be tied to VDD or VSS if not in use.
Crystal type: Crystal input terminal or external clock input
I pin
RC type: RC oscillator input pin
Crystal type: Output terminal for crystal oscillator or
external clock input pin.
O
RC type: Clock output with a duration of one instruction
cycle time. The prescaler is determined by
the CONT register.
External clock signal input.
VDD
18 – Power supply
VSS
7 – Ground
Product Specification (V1.0) 12.25.2007
(This specification is subject to change without further notice)
•5
Datasheet pdf - http://www.DataSheet4U.co.kr/
11 Page | ||
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