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Número de pieza | EM78P468L | |
Descripción | 8-BIT Microcontroller | |
Fabricantes | ELAN Microelectronics | |
Logotipo | ||
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EM78P468L
8-BIT
Microcontroller
Product
Specification
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
March 2006
1 page EM78P468L
8-BIT Microcontroller
1 GENERAL DESCRIPTION
This LSI is an 8-bit RISC type microprocessor with high speed CMOS technology and
low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT),
Data RAM, ROM, programmable real time clock counter, internal/external interrupt,
power down mode, LCD driver, infrared transmitter function, and tri-state I/O. The
EM78P468L provides multi-protection bits to protect against intrusion of user’s code in
the OTP memory and a seven option bits to accommodate user’s requirements. It also
provides an especial 13 bits customer ID option.
With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying
user’s programs. Moreover, user developed code can be easily programmed with the
ELAN writer.
2 FEATURES
2.1 CPU
Operating voltage and temperature range:
EM78P468N:
z Commercial:2.3V ~ 5.5 V. (at 0 ~+70 )
z Industrial: 2.5V ~ 5.5 V. (at -40 ~+85 )
EM78P468L:
z Commercial:1.9V ~ 5.5 V. (at 0 ~+70 )
z Industrial: 2.1V ~ 5.5 V. (at -40 ~+85 )
Operation speed: DC ~ 10MHz clock input.
Dual clock operation
z High frequency oscillator can select among Crystal, RC, or PLL (phase lock
loop)
z Low frequency oscillator can select between Crystal or RC mode
Totally 272 bytes SRAM
z 144 bytes general purpose register
z 128 bytes on chip data RAM
4K*13 bits OTP - ROM (One Time Programmable - Read Only Memory)
Up to 28 bi-directional tri-state I/O ports
z Typically, 12 bi-directional tri-state I/O ports.
Product Specification (V1.0) 03.15.2006
(This specification is subject to change without further notice)
•1
5 Page 3.4 QFP - 44
EM78P468L
8-BIT Microcontroller
SEG27/P8.3
SEG26/P8.2
SEG25/P8.1
SEG24/P8.0
SEG23/P7.7
SEG22/P7.6
SEG21/P7.5
SEG20/P7.4
SEG19/P7.3
SEG18/P7.2
SEG17/P7.1
33332222222
32109876543
34 22
35 21
36 EM78P468NCQ 20
37
38
EM78P468LCQ
19
18
39 17
40 QFP-44 16
41 15
42 14
43 13
44 12
1
2
3
4
5
6
7
8
9
1
0
1
1
P5.5/INT1
P5.4/INT0
XOUT
XIN
VDD
OSCO
R-OSCI
GND
/RESET
VLCD3
VLCD2
Input Pin
Output Pin
Input/Output Pin
Digital I/O Pin/LCD Output Pin
LCD Output Pin
Fig. 1-(d) Pins Configuration for 44 Pin QFP Package
Product Specification (V1.0) 03.15.2006
(This specification is subject to change without further notice)
•7
11 Page |
Páginas | Total 70 Páginas | |
PDF Descargar | [ Datasheet EM78P468L.PDF ] |
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