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Teilenummer | EM78P568 |
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Beschreibung | 8-BIT OTP MICRO-CONTROLLER | |
Hersteller | ELAN Microelectronics | |
Logo | ||
Gesamt 30 Seiten EM78P568
8-BIT OTP MICRO-CONTROLLER
Version 4.9
ELAN MICROELECTRONICS CORP.
No. 12, Innovation 1st RD., Science-Based Industrial Park
Hsin Chu City, Taiwan
TEL: (03) 5639977
FAX: (03) 5630118 (Elan SA2)
EM78P568
8-bit OTP Micro-controller
I. General Description
The EM78P568 is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. There are
16Kx13 bits Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. It provides security bits and
some One time programmable Option bits to protect the OTP memory code from any external access as well as to meet
user’s options.
This integrated single chip has an on_chip watchdog timer (WDT), program OTP-ROM, data RAM, LCD driver,
programmable real time clock/counter, internal interrupt, power down mode, 8-bit D/A, 5-bit Comparator, DAC tone
generator, CTCSS analog circuit, programming dual tone generator and tri-state I/O.
II. Feature
CPU
‧Operating voltage : 2.2V~5.5V
‧16k x 13 on chip Electrical One Time Programmable Read Only Memory (OTP-ROM)
‧1k x 8 on chip data RAM
‧Up to 51 bi-directional tri-state I/O ports
‧16 level stack for subroutine nesting
‧8-bit real time clock/counter (TCC)
‧two 8-bit counters : COUNTER1 and COUNTER2
‧On-chip watchdog timer (WDT)
‧99.9% single instruction cycle commands
‧Four modes (Main clock can be programmed from 447.829k to 17.913MHz generated by internal PLL)
Mode
CPU status Main clock 32.768kHz clock status
Sleep mode Turn off
Turn off
Turn off
Idle mode
Turn off
Turn off
Turn on
Green mode Turn on
Turn off
Turn on
Normal mode Turn on
Turn on
Turn on
‧Input port interrupt function
‧8 interrupt source, 4 external, 8 internal
‧Dual clocks operation (Internal PLL main clock , External 32.768KHz)
PROGRAMMING TONE GENERATORS
‧Operating voltage : 2.2V~5.5V
‧Programming Tone1 and Tone2 dual tone generators
‧11-bit programming Tone1 generators
‧8-bit programming Tone2 generator
COMPARATOR
‧Operating : 2.7V ~ 5.5V
‧3-channel input
‧5-bit comparison reference level setting
‧Internal (2.5V or VDD) or external reference level
DAC
‧Operating : 2.7V~5.5V
‧8-bit R-2R D/A converter
‧8-bit programmable tone output
‧Easy to direct access as programmable CTCSS tone output by DAC tone generator
‧Internal (VDD or 2.5V) reference
__________________________________________________________________________________________________________________________________________________________________
* This specification are subject to be changed without notice.
1
01/17/2007 V4.9
6 Page EM78P568
8-bit OTP Micro-controller
VI. Pin Descriptions
PIN I/O
DESCRIPTION
POWER
VDD
AVDD
VSS
AVSS
POWER
POWER
Digital power
Analog power
Digital ground
Analog ground
CLOCK
XIN I
Input pin for 32.768 kHz oscillator
XOUT
O
Output pin for 32.768 kHz oscillator
PLLC
I
Phase loop lock capacitor, connect a capacitor 0.01u to 0.047u to the ground.
LCD
COM0 ~ COM3 O
Common driver pins of LCD drivers
SEG0 ~ SEG9 O
Segment driver pins of LCD drivers
SEG10 ~ SEG12 O (I/O : PORT5) SEG10 to SEG31 are shared with IO PORT.
SEG13 ~ SEG20 O (I/O : PORT9)
SEG21 ~ SEG28 O (I/O : PORTB)
SEG29 ~ SEG31 O (I/O : PORTC)
Programming
tone generators
TONE
O
Programming single tone or dual tone output
Comparator
CMP1
CMP2
CMP3
I (P62)
I (P63)
I (P64)
Comparator input pins. Shared with PORT62, PORT634 and PORT64.
8-bit D/A
DAO
O (P67)
D/A converter output pin.
Shared with PORT67
CTCSS
MICO
O
Microphone amplifier output. Put a feedback resistor to adjust the gain
MICI
RXO
I
O
Microphone amplifier input
Receiver amplifier output. Put a feedback resistor to adjust the gain
RXI I
Receiver amplifier input
AURX
O (P65)
Receiving audio output
Share with PORT65
MTX
O (P66)
Modulation transmission output for CTCSS tone
Shared with PORT66
IO
P55~P57
I/O
PORT5 can be INPUT or OUTPUT port each bit.
PORT5(7:5) are shared with LCD Segment signal.
P60 ~P67
P70 ~ P77
I/O
I/O
PORT6 can be INPUT or OUTPUT port each bit.
PORT7 can be INPUT or OUTPUT port each bit.
PORT7(4~6) are shared with SPI interface pins
Internal Pull high function.
PORT7(0~3) has interrupt function.
__________________________________________________________________________________________________________________________________________________________________
* This specification are subject to be changed without notice.
7
01/17/2007 V4.9
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ EM78P568 Schematic.PDF ] |
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