MC68HC705JP7CDW Freescale Semiconductor, MC68HC705JP7CDW Datasheet - Page 29

• Manufacturer Part Number: MC68HC705JP7CDW
• Description: IC MCU 8BIT 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705JP7CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 22
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 3
Central Processor Unit (CPU)
3.1 Introduction
This section describes the central processor unit (CPU) registers.
registers. CPU registers are not part of the memory map.
3.2 Accumulator
The accumulator is a general-purpose 8-bit register as shown in
accumulator to hold operands and results of arithmetic and non-arithmetic operations.
Freescale Semiconductor
Reset:
15
15
Read:
Write:
0
1
0
1
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
0
1
Bit 7
0
0
Figure 3-1. M68HC05 Programming Model
PCH
10
0
CARRY/BORROW FLAG
6
0
HALF-CARRY FLAG
INTERRUPT MASK
Figure 3-2. Accumulator (A)
NEGATIVE FLAG
0
8
ZERO FLAG
7
7
1
7
7
1
5
6
1
1
5
5
1
Unaffected by reset
H
4
4
PCL
A
X
I
SP
N
3
Z
C
0
0
0
0
0
Figure
Figure 3-1
INDEX REGISTER (X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
ACCUMULATOR (A)
2
3-2. The CPU uses the
shows the five CPU
1
Bit 0
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