MC68HC705J1ACDW Freescale Semiconductor, MC68HC705J1ACDW Datasheet - Page 40

IC MCU 4MHZ 1.2K OTP 20-SOIC

MC68HC705J1ACDW

Manufacturer Part Number
MC68HC705J1ACDW
Description
IC MCU 4MHZ 1.2K OTP 20-SOIC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705J1ACDW

Core Processor
HC05
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
14
Program Memory Size
1.2KB (1.2K x 8)
Program Memory Type
OTP
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Freescale Semiconductor, Inc.
Memory
NOTE:
Writing logic 1s to both the ELAT and EPGM bits with a single instruction
sets ELAT and clears EPGM. ELAT must be set first by a separate
instruction.
Bits [7:3] — Reserved
Take these steps to program a byte of EPROM/OTPROM:
1. Apply the programming voltage, V
2. Set the ELAT bit.
3. Write to any EPROM/OTPROM address.
4. Set the EPGM bit and wait for a time, t
5. Clear the ELAT bit.
2.6.3 EPROM Erasing
The erased state of an EPROM bit is logic 0. Erase the EPROM by
exposing it to 15 Ws/cm
2537 angstroms. Position the ultraviolet light source one inch from the
EPROM. Do not use a shortwave filter.
2.7 Mask Option Register
The mask option register (MOR) is an EPROM/OTPROM byte that
controls these options:
Technical Data
2
of ultraviolet light with a wave length of
COP watchdog (enable or disable)
External interrupt pin triggering (edge-sensitive only or edge- and
level-sensitive)
Port A external interrupts (enable or disable)
Port pulldown resistors (enable or disable)
STOP instruction (stop mode or halt mode)
Crystal oscillator internal resistor (enable or disable)
EPROM security (enable or disable)
Short oscillator delay (enable or disable)
Memory
For More Information On This Product,
Go to: www.freescale.com
, to the IRQ/V
pin.
PP
PP
.
EPGM
MC68HC705J1A — Rev. 4.0

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