em78p131a ELAN Microelectronics Corp, em78p131a Datasheet - Page 5

• Manufacturer Part Number: em78p131a
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

1 General Description
2 Features
Product Specification (V1.2) 09.16.2009
(This specification is subject to change without further notice)
The EM78P131A is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS
technology. It has an on-chip 1024×13-bit Electrical One Time Programmable Read Only Memory
(OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Fifteen Code
option bits are also available to meet user’s requirements.
With its enhanced OTP-ROM feature, the EM78P131A 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.
CPU Configuration
I/O Port Configuration
Operating Voltage Range:
Operating Temperature range: 0~70°C
Operating Frequency range (base on 2 clocks):
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1K×13 bits on-chip ROM
32×8 bits on-chip registers (SRAM,
general purpose)
5 level stacks for subroutine nesting
Less than 1.5 mA at 5V/4MHz
Typically 15 μA, at 3V/32kHz
Typically 1 μA, during Sleep mode
1 bidirectional I/O ports : P6
1 Input and 7 I/O pins
Wake-up port : P6
3 Programmable pull-down I/O pins
7 programmable pull-high I/O pins
7 programmable open-drain I/O pins
External interrupt : P60
OTP version:
Crystal Mode:
ERC Mode:
IRC Mode:
Operating voltage range: 2.3V~5.5V
DC~20MHz/2clks @ 5V; DC~100ns inst. cycle @ 5V
DC~8MHz/2clks @ 3V; DC~250ns inst. cycle @ 3V
DC~4MHz/2clks @ 2.3V; DC~500ns inst. cycle @ 2.3V
DC~4MHz/2clks @ 5V; DC~500ns inst. cycle @ 5V
DC~4MHz/2clks @ 3V; DC~500ns inst. cycle @ 3V
DC~4MHz/2clks @ 2.3V; DC~500ns inst. cycle @ 2.3V
Oscillation mode : 4 MHz, 8 MHz, 1 MHz, 455kHz
Process deviation : Typ. ± 5.5%, Max. ± 6%
Temperature deviation : ±10% (0°C~70°C )
Note: Green products do not contain hazardous
Peripheral Configuration
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Three available Interrupts:
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Special Features
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Other Features
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(with ± 0.3V allowance for error)
Package Type:
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substances.
8-Bit Microcontroller with OTP ROM
8-bit real time clock/counter (TCC) with
selective signal sources, trigger edges, and
overflow interrupt
TCC overflow interrupt
Input-port status changed interrupt (wake-up
from sleep mode)
External interrupt
Programmable free running watchdog timer
Power saving Sleep mode
Selectable Oscillation mode
Programmable prescaler of oscillator set-up
time
One security register to prevent intrusion of
user’s OTP memory code
One configuration register to match user’s
requirement
Two clocks per instruction cycle
Two LVD level selection / POR
10-pin MSOP 118mil :
EM78P131AMS10J
EM78P131A
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