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PDF EM78P131A Data sheet ( Hoja de datos )
| Número de pieza | EM78P131A | |
| Descripción | 8-Bit Microcontroller | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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EM78P131A
8-Bit Microcontroller
with OTP ROM
Product
Specification
DOC. VERSION 1.2
ELAN MICROELECTRONICS CORP.
September 2009
1 page  
EM78P131A
8-Bit Microcontroller with OTP ROM
1 General Description
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.
2 Features
CPU Configuration
• 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
I/O Port Configuration
• 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
Operating Voltage Range:
• OTP version:
Operating voltage range: 2.3V~5.5V
Operating Temperature range: 0~70°C
Operating Frequency range (base on 2 clocks):
• Crystal Mode:
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
• ERC Mode:
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
• IRC Mode:
Oscillation mode : 4 MHz, 8 MHz, 1 MHz, 455kHz
Process deviation : Typ. ± 5.5%, Max. ± 6%
Temperature deviation : ±10% (0°C~70°C )
Product Specification (V1.2) 09.16.2009
(This specification is subject to change without further notice)
Peripheral Configuration
• 8-bit real time clock/counter (TCC) with
selective signal sources, trigger edges, and
overflow interrupt
Three available Interrupts:
• TCC overflow interrupt
• Input-port status changed interrupt (wake-up
from sleep mode)
• External interrupt
Special Features
• Programmable free running watchdog timer
• Power saving Sleep mode
• Selectable Oscillation mode
Other Features
• 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
(with ± 0.3V allowance for error)
Package Type:
• 10-pin MSOP 118mil : EM78P131AMS10J
Note: Green products do not contain hazardous
substances.
•1
5 Page 
EM78P131A
8-Bit Microcontroller with OTP ROM
5.1.4 R3 (Status Register)
Bit 7
Bit 6
Bit 5
Bit 4
RST
GP1
GP0
T
Bit 3
P
Bit 2
Z
Bit 1
DC
Bit 0
C
Bit 0 (C): Carry flag
Bit 1 (DC): Auxiliary carry flag
Bit 2 (Z): Zero flag
Set to "1" if the result of an arithmetic or logic operation is zero.
Bit 3 (P):
Power down bit
Set to “1” during power on or by a "WDTC" command; and reset to “0” by a
"SLEP" command.
Bit 4 (T):
Time-out bit
Set to “1” with the "SLEP" and "WDTC" commands, or during power up;
and reset to “0” by WDT time-out.
Bits 5 ~6 (GP0 ~ GP1): General-purpose read/write bits
Bit 7 (RST): Bit for reset type
0 : Set to 0 if the device wakes up from other reset type
1 : Set to 1 if the device wakes up from sleep mode on a pin change
5.1.5 R4 (RAM Select Register)
Bits 0 ~ 5 are used to select registers (Address: 00~06, 0F~2F) in indirect addressing
mode.
Bits 6 ~ 7 are general-purpose read bits.
See the Data Memory Configuration in Fig. 5-3.
5.1.6 R6 (Port 6)
R6 are I/O registers.
R5 are reserved.
P63 is input only.
Product Specification (V1.2) 09.16.2009
(This specification is subject to change without further notice)
•7
11 Page | ||
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| PDF Descargar | [ Datasheet EM78P131A.PDF ] | |
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