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參數(shù)資料
| 型號(hào)： | EM78248 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | 8-Bit Micro-Controller for General-Purpose Product(帶2K × 13片上ROM，工作電壓4.5V-5.5V的8位微控制器) |
| 中文描述： | 8位微控制器的通用產(chǎn)品（帶2K × 13片上ROM的，工作電壓4.5V時(shí)至5.5V的8位微控制器） |
| 文件頁(yè)數(shù)： | 1/19頁(yè) |
| 文件大小： | 136K |
| 代理商： | EM78248 |
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* This specification are subject to be changed without notice.
EM78248/448
8-BIT MICRO-CONTROLLER FOR CONSUMER PRODUCT
1
9.30.1997
GENERAL DESCRIPTION
The EM78248/448 is an 8-bit microprocessor with low-power, high speed CMOS technology. Integrated onto
a single chip are on-chip watchdog timer (WDT), RAM, ROM, real time clock/counter, power down mode and
bidirectional tri-state I/O ports. It can be developed as keyboard encoder or other applications.
FEATURES
Operating voltage range : 4.5V ~ 5.5V.
Available in temperature range: 0
°
C ~ 70
°
C.
2K x 13 on chip ROM (EM78248), or
4K x 13 on chip ROM (EM78448)
11 special function registers.
146
×
8 general purpose registers (SRAM).
5 bi-directional I/O ports (35 I/O pins).
3 LED direct sink pins with internal serial resistor.
Built-in RC oscillator with external serial resistor.
Built-in power on reset.
5 level stack for subroutine nesting.
8-bit real time clock/counter (TCC) with overflow interrupt.
Two oscillator periods option or four oscillator periods per instruction cycle.
Power down mode.
Programmable wake up from sleep circuit on I/O ports.
Programmable free running on-chip watchdog timer.
16 pull-up and wake-up pins.
Two open-drain pins.
Two R-option pins.
40 pin DIP.
Patent Number : 61007 (R.O.C)
Patent Pending : 83216083 (R.O.C)
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| EM78448 | 8-Bit Micro-Controller for General-Purpose Product(帶4K × 13片上ROM，工作電壓4.5V-5.5V的8位微控制器) |
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| EM78257A/B | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit MCU for General Purpose Product |
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| EM782SP16A-10S | 制造商:EMLSI 制造商全稱(chēng):Emerging Memory & Logic Solutions Inc 功能描述:512K x 16Bit Multiplexed Single Transistor RAM |
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