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EM78P458/459
OTP ROM
2. 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 × 13 bits on chip ROM
• 84 × 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
This specification is subject to change without prior notice. 07.01.2003 (V1.3)
4
• Two clocks per instruction cycle