MC68HC705J1ACDW Freescale Semiconductor, MC68HC705J1ACDW Datasheet - Page 50

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
-

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Central Processor Unit (CPU)
3.5.4 Program Counter
3.5.5 Condition Code Register
Technical Data
Reset:
Read:
Write:
Reset:
Read:
Write:
The program counter (PC) is a 16-bit register that contains the address
of the next instruction or operand to be fetched. The five most significant
bits of the program counter are ignored and appear as 00000.
Normally, the address in the program counter automatically increments
to the next sequential memory location every time an instruction or
operand is fetched. Jump, branch, and interrupt operations load the
program counter with an address other than that of the next sequential
location.
The condition code register (CCR) is an 8-bit register whose three most
significant bits are permanently fixed at 111. The condition code register
contains the interrupt mask and four flags that indicate the results of the
instruction just executed.
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit
15
Bit 7
0
1
1
14
0
Figure 3-6. Condition Code Register (CCR)
Central Processor Unit (CPU)
= Unimplemented
Go to: www.freescale.com
13
0
6
1
1
Figure 3-5. Program Counter (PC)
12
0
11
0
5
1
1
10
9
Loaded with vector from $07FE and $07FF
H
U
4
8
U = Unaffected
7
3
1
I
6
MC68HC705J1A — Rev. 4.0
5
N
U
2
4
3
U
Z
1
2
1
Bit 0
C
U
Bit
0

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