Specification
Overview
-
General Description
The EM78P447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped with 4k x 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 enhanced 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.
-
Features & Benefits
-
- One security register to prevent exposure of OTP memory codes
- One configuration register to accommodate user's ID register requirements.
- Two clocks per instruction cycle
- Single instruction cycle commands
- Transient point of system frequency between HXT and LXT is 400kHz
- Programmable free running on-chip watchdog timer
-
Peripheral configuration:
- 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
- Power down (Sleep) mode
-
Operating frequency range (base on two clocks):
- Crystal Mode: DC ~ 20MHz @ 5V; DC ~ 8MHz @ 3V; DC ~ 4MHz @ 2.3V
- RC Mode: DC ~ 4MHz @ 5V; DC ~ 4MHz @ 3V; DC ~ 4MHz @ 2.3V
-
Operating voltage range:
- 2.3V ~ 5.5V
-
I/O port configuration:
- 3 bidirectional I/O ports
- 10 programmable pull-high pins
- 2 programmable open-drain I/O pins
- 2 programmable R-option pins
-
Low power consumption:
- Less than 2.2 mA at 5V/4MHz
- 30µA Typical at 3V/32kHz
- µA Typical during Sleep mode
-
CPU configuration:
- 4K x 13 bits on-chip ROM
- 148 x 8 bits on-chip registers (SRAM and general purpose registers)
- 5-level stacks for subroutine nesting
-
Operating temperature range:
- 0°C ~70°C
-
Two interrupts available:
- External interrupt (/INT)
- TCC overflow interrupt
-
-
Data Sheet
-
Download File
-
-
Package
-
Download File
-
-
Technical Information
-
Website Link
-
