EM78P447SAP - 8-BIT MICRO-CONTROLLER - ELAN Microelectronics Corp.pdf

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EM78P447S
OTP ROM
EM78P447S
8-BIT MICRO-CONTROLLER
Version 1.2
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EM78P447S
OTP ROM
Specification Revision History
Version
Content
1.0
Initial version
1.1
Change Power on reset content
06/25/2003
1.2
Add the device characteristic at section 6.3
5/11/2004
Application Note
This specification is subject to change without prior notice.
2
06.25.2003 (V1.1)
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EM78P447S
OTP ROM
1. GENERAL DESCRIPTION
EM78P447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped
with 4K*13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a
PROTECTION bit to prevent user’s code in the OTP memory from being intruded. Seven OPTION bits are
also available to meet user’s requirements.
With its OTP-ROM feature, the EM78P447S is able to offer a convenient way of developing and verifying
user’s programs. Moreover, user can take advantage of ELAN Writer to easily program his development
code.
This specification is subject to change without prior notice.
3
06.25.2003 (V1.1)
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EM78P447S
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 at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
* RC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.
• Low power consumption:
* Less then 2.2 mA at 5V/4MHz
* Typically 30 µ A, at 3V/32KHz
* Typically 1 µ A, during sleep mode
• 4K × 13 bits on chip ROM
• One security register to prevent intrusion of OTP memory codes
• One configuration register to accommodate user’s requirements
• 148 × 8 bits on chip registers(SRAM, general purpose register)
• 3 bi-directional I/O ports
• 5 level stacks for subroutine nesting
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
• Two clocks per instruction cycle
• Power down (SLEEP) mode
• Two available interruptions
* TCC overflow interrupt
* External interrupt
• Programmable free running watchdog timer
• 10 programmable pull-high pins
• 2 programmable open-drain pins
• 2 programmable R-option pins
• Package types:
* 28 pin DIP 600 mil
: EM78P447SAP
* 28 pin SOP (SOIC) 300 mil : EM78P447SAM
* 28 pin SSOP 209 mil : EM78P447SAS
* 32 pin DIP 600 mil
: EM78P447SBP
* 32 pin SOP (SOIC) 450 mil : EM78P447SBWM
This specification is subject to change without prior notice.
4
06.25.2003 (V1.1)
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EM78P447S
OTP ROM
• 99.9% single instruction cycle commands
• The transient point of system frequency between HXT and LXT is around 400KHz
This specification is subject to change without prior notice.
5
06.25.2003 (V1.1)
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