Specification
Overview
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General Description
The EM78P224N is an 8-bit microprocessor with low-power and high-speed CMOS technology and high noise immunity. It has a built-in 4k x 15-bit Electrical One Time Programmable Read Only Memory (OTP-ROM) and 176 bytes in system programmable SRAM. It provides three protection bits to prevent intrusion of user’s OTP memory code. Seven option bits are also available to meet user’s requirements. With its enhanced OTP-ROM features, the EM78P224N provides a convenient way of developing and verifying user’s programs. Moreover, this OTP device offers the advantages of easy and effective program updates, using development and programming tools. User can avail of the ELAN Writer to easily program his development code.
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Features & Benefits
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I/O Port Configuration
- 4 bidirectional I/O ports: P5, P6, P7 and P8
- 30 I/O pins
- 8 programmable pull-down I/O pins
- 24 programmable pull-high I/O pins
- 8 programmable open-drain I/O pins
- 16 programmable high sink current I/O pins
- 16 programmable high drive current I/O pins
- External interrupt: INT
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CPU Configuration
- 4K x 15 bits on-chip OTP ROM
- 176 bytes on-chip registers (SRAM, general purpose)
- 8-level stacks for subroutine nesting
- Dual clock operation mode
- 4 programmable level voltage detector (LVD): 4.5V, 4.0V, 3.3V, 2.2V
- 4 programmable level voltage reset (LVR): 4.0V, 3.5V, 2.7V, 1.8V(POR)
- Power on reset level voltage: 1.8V(Reset)~1.9V(Release)
- Less than 1.0 mA at 5V/4MHz
- Typically 15 µA at 3V/16kHz
- Typically 2 µA during sleep mode
- Four operation modes can be selected.
- Sleep mode: CPU, main and sub clock turn off
- Idle mode: CPU and main clock turn off, sub clock turn on
- Green mode: main clock turn off, CPU and sub clock turn on
- Normal mode: CPU, main clock and sub clock turn on
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Operating Voltage Range
- 2.1V~5.5V at 0°C~70°C (Commercial Grade)
- 2.3V~5.5V at -40°C~85°C (Industrial Grade)
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Operating Frequency Range
- Crystal Mode: DC~20MHz@5V; DC~8MHz@3V; DC~4MHz@2.1V
- ERC Mode: DC~16MHz@4.5V; DC~8MHz@3V; DC~4MHz@2.1V
- IRC Mode: 1MHz, 4MHz, 8MHz, 16MHz ±2%@25°C, 5V
- Sub Clock: IRC 32kHz/16kHz
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Peripheral Configuration
- 8-bit real time clock/counter (TCC) with selective signal sources and trigger edges
- 8-bit Timer/Counter (TC1): Timer/Counter/capture/window/buzzer/PWM/PDO (programmable divider output) mode
- External interrupt with wake-up function and rising or falling edges interrupt
- Four port input status change wake-up
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Five Available Interrupts
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Special Features
- Programmable free running watchdog timer
- High EFT immunity
- Power down mode (Sleep mode)
- Selectable oscillation mode
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Data Sheet
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Download File
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Package
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Download File
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Technical Information
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Website Link
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