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PDF EM78452 Data sheet ( Hoja de datos )
| Número de pieza | EM78452 | |
| Descripción | 8-BIT MICROCONTROLLER | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EM78452 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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EM78452
8-Bit
Microcontroller
Product
Specification
DOC. VERSION 1.0
ELAN MICROELECTRONICS CORP.
October 2007
1 page  
EM78452
8-Bit Microcontroller
1 General Description
The EM78452 is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS
technology. It has 4K×13-bit on-chip ROM and 140×8-bit on-chip general purpose registers. Its operational
kernel is implemented with RISC-like architecture and it is available in mask ROM version. The one time
programmable (OTP) version is flexible, in both mass production and engineering test stages. OTP
provides users with unlimited volume along with favorable price opportunities. This device is equipped with
Serial Peripheral Interface (SPI) function, and it is suitable for wired communication. There are 58
easy-to-learn instructions and the user’s program can be emulated with the EMC In-Circuit Emulator (ICE).
2 Features
CPU configuration
• 4K×13 bits on-chip ROM
• 140×8 bits on chip general purpose registers
• 11 special function registers
• 5-level stacks for subroutine nesting
Low power consumption:
• Less than 3 mA at 5V/4MHz
• Typically 10 μA during sleep mode
I/O port configuration
• 5 bidirectional I/O ports (35 I/O pins)
• 12 Wake-up pins
• 32 programmable pull-high input pins
• 2 open-drain I/O pins
• 2 R-option pins
Operating voltage range: 1.8V ~ 5.5V
Operating temperature range: 0°C ~70°C
Operating frequency range (base on two clocks):
• Crystal mode:
DC ~ 20MHz @ 5V
DC ~ 16MHz @ 2.2V
DC ~ 4MHz @ 1.8V
Serial Peripheral Interface (SPI)
Four available interrupts:
• External interrupt (/INT)
• SPI transmission completed interrupt
• TCC overflow interrupt
• Timer 1 overflow interrupt
Peripheral configuration
• 8-bit real time clock/counter (TCC) with overflow
interrupt
• Power down mode
• I/O ports have Programmable wake-up function
from sleep mode
2 ~ 4 machine clocks for each instruction cycle
3 LED Direct sinking pins with internal serial resistors
Built-in power-on reset
Programmable free running on-chip watchdog timer
Package Type:
• 40-pin DIP 600mil : EM78452P
• 40-pin SOP 450mil : EM78452WM
• 44-pin QFP
: EM78452AQ
Product Specification (V1.0) 10.18.2007
(This specification is subject to change without further notice)
•1
5 Page 
EM78452
8-Bit Microcontroller
Both P74 and P76 reads or writes data from the DATA pin, while both P75 and P77
reads or writes data from the CLK pin.
5.1.7 R9 (Port9)
The general 6-bit I/O register. The values of the two most significant bits are read as "0".
Address
R PAGE registers
IOC PAGE registers
00 R0 (Indirect Addressing Register)
Reserve
01 R1 (Time Clock Counter)
CONT (Control Register)
02 R2 (Program Counter)
Reserve
03 R3 (Status Register)
Reserve
04 R4 (RAM Select Register)
Reserve
05 R5 (Port5)
IOC5 (I/O Port Control Register)
06 R6 (Port6)
IOC6 (I/O Port Control Register)
07 R7 (Port7)
IOC7 (I/O Port Control Register)
08 R8 (Port8)
IOC8 (I/O Port Control Register)
09 R9 (Port9)
IOC9 (I/O Port Control Register)
0A RA (SPI read buffer)
Reserve
0B RB (SPI write buffer)
0C RC (SPI status buffer)
Reserve
IOCC (Timer1 Control Register)
0D RD (SPI control buffer)
IOCD (Pull_high Control Register)
0E RE (Timer1 register)
0F Reserve
IOCE (WDT Control Register)
IOCF (Interrupt Mask Register)
10
︰ General Registers
1F
20
： Bank0 Bank1 Bank2 Bank3
3E
3F R3F (Interrupt Status Register)
Fig. 5-3 Data Memory Configuration
Product Specification (V1.0) 10.18.2007
(This specification is subject to change without further notice)
•7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EM78452.PDF ] | |
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