MC68HC705J1ACDW Freescale Semiconductor, MC68HC705J1ACDW Datasheet - Page 48

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
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
MC68HC705J1ACDWE
Manufacturer:
INTERSIL
Quantity:
1 000
Price:
Central Processor Unit (CPU)
3.5 CPU Registers
3.5.1 Accumulator
3.5.2 Index Register
Technical Data
Reset:
Reset:
Read:
Read:
Write:
Write:
The M68HC05 CPU contains five registers that control and monitor
microcontroller unit (MCU) operation:
CPU registers are not memory mapped.
The accumulator (A) is a general-purpose 8-bit register. The CPU uses
the accumulator to hold operands and results of ALU operations.
In the indexed addressing (X) modes, the CPU uses the byte in the index
register to determine the conditional address of the operand. The index
register also can serve as a temporary storage location or a counter.
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit 7
Bit 7
Accumulator
Index register
Stack pointer
Program counter
Condition code register
Central Processor Unit (CPU)
Go to: www.freescale.com
6
6
Figure 3-3. Index Register (X)
Figure 3-2. Accumulator (A)
5
5
Unaffected by reset
Unaffected by reset
4
4
3
3
MC68HC705J1A — Rev. 4.0
2
2
1
1
Bit 0
Bit 0

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