General Description
EM78P458 and EM78P459 are 8-bit microprocessors designed and developed with low-power and high-speed CMOS technology. It is equipped with a 4K x 13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). With its OTP-ROM feature, it is able to offer a convenient way of developing and verifying user’s programs. Moreover, user can take advantage of EMC Writer to easily program his development code.
Features
- Operating voltage range: 2.3V~5.5V
- Operating temperature range: 0°C~70°C
- Operating frequency range(base on 2 clocks):
* Crystal mode: DC ~ 20MHz/2clks,5V; DC ~ 8MHz/2clks,3V
* RC mode: DC ~ 4MHz/2clks,5V; DC ~ 4MHz/2clks,3V
- Low power consumption:
* Less than 1.5 mA at 5V/4MHz
* Typically 15 µA, at 3V/32KHz
* Typically 1 µA, during sleep mode
- 4K x 13 bits on chip ROM
- 84 x 8 bits on chip registers (SRAM)
- 2 bi-directional I/O ports
- 8 level stacks for subroutine nesting
- 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and
- overflow interrupt
- 8-bit multichannel Analog-to-Digital Converter with 8-bit resolution
- Dual Pulse Width Modulation (PWM ) with 10-bit resolution
- One pair of comparators
- Power-down (SLEEP) mode
- Six available interruptions
* TCC overflow interrupt
* Input-port status changed interrupt (wake up from the sleep mode)
* External interrupt
* ADC completion interrupt
* PWM period match completion
* Comparator high interrupt
- Programmable free running watchdog timer
- 8 Programmable pull-down I/O pins
- 7 programmable pull-high I/O pins
- 8 programmable open-drain I/O pins
- Two clocks per instruction cycle
- Package types:
* 18 pin DIP 300mil : EM78P458BP
* 18 pin SOP 300mil : EM78P458BM
* 20 pin DIP 300mil : EM78P458AP
* 20 pin SOP 300mil : EM78P458AM
* 24 pin skinny DIP 300mil : EM78P459AK
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