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EM78P202N

The EM78P202N is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has as an on-chip 2K’13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Two Code option bits are also available to meet user’s requirements. With its enhanced OTP-ROM features, the device 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. Users can avail of the ELAN Writer to easily program their development code.

CPU configuration

2Kx13 bits on-chip OTP-ROM

80x8 bits on-chip registers (SRAM)

8-level stacks for subroutine nesting

3 programmable Level Voltage Reset (LVR) : 4.0V, 3.0V, 2.5V

Less than 1.5 mA at 5V/4MHz

Typically 15 mA, at 3V/32kHz

Typically 2 mA, during sleep moden

I/O port configuration

4 bidirectional I/O ports: P5, P6, P7 and P8

Wake-up port : P6

18 I/O pins

8 programmable pull-down I/O pins

6 programmable pull-high I/O pins

4 programmable open-drain I/O pins

12 Programmable high sink current I/O pins

8 Programmable high drive current I/O pins

External interrupt : P77, P71

Operating voltage range:

OTP version:

Operating voltage range: 2.1V~5.5V (commercial)

Operating voltage range: 2.3V~5.5V (industrial)

Operating temperature range:

Operating temperature range: 0°C~70°C (commercial)

Operating temperature range: -40°C~85°C (industrial)

Operating frequency range

Crystal mode:

DC~16MHz/2 clks @ 4.5V; DC~125ns inst. Cycle @ 4.5V

DC ~ 8MHz/2 clks @ 3V; DC~250ns inst. Cycle @ 3V

ERC mode:

DC ~ 16MHz/2 clks @ 4.5V; DC~125ns inst. Cycle @ 5V

DC ~ 8MHz/2 clks @ 3V; DC ~ 250ns inst. Cycle @ 3V

IRC mode:

Oscillation mode: 16MHz, 4 MHz, 1 MHz, 455kHz

Process deviation: Max. ± 3%

Temperature deviation: ± 5% (-40°C~85°C)

Internal RC Frequency Drift Rate

Temperature(-40°C~85°C) Voltage(2.1V~5.5V) Process Total

4MHz ±5% ±5% ±3% ±13%

16MHz ±5% ±5% ±3% ±13%

1MHz ±5% ±5% ±3% ±13%

455kHz ±5% ±5% ±3% ±13%

All the four main frequencies can be trimmed by programming with four calibrated bits in the ICE210N Simulator. OTP is auto trimmed by ELAN Writer (DWTR)

Fast set-up time requires only 800ms (VDD:5V,Crystal: 4MHz, C1/C2: 20pF) in XT mode and 10ms inIRC mode (VDD:5V IRC:4MHz)
Peripheral configuration

8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt

One comparator (can act as an OP).(offset voltage is smaller than 10mV)

Five available interrupts

TCC overflow interrupt

Input-port status changed interrupt (wake up from sleep mode)

Two External interrupts

Comparator high/low interrupt

Special Features

Programmable free running Watchdog Timer

Two clocks per instruction cycle

Power-on voltage detector available (1.9 V± 0.2V)

High EFT immunity (better performance at 4MHz or below

Power saving Sleep mode

Selectable Oscillation mode

Package Type:

20-pin DIP 300mil : EM78P202ND20J/S

20-pin SOP 300mil : EM78P202NSO20J/S

18-pin DIP 300mil : EM78P202ND18J/S

18-pin SOP 300mil : EM78P202NSO18J/S

Note: Green products do not contain hazardous .substances.