MC68HC705C8ACFB Freescale Semiconductor, MC68HC705C8ACFB Datasheet - Page 44

• Manufacturer Part Number: MC68HC705C8ACFB
• Description: IC MCU 8K 4MHZ OTP 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACFB

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Central Processor Unit (CPU)
3.3 CPU Registers
Technical Data
44
Figure 3-1
within the CPU and are not part of the memory map.
Bit 12 11
Bit 12 11
Freescale Semiconductor, Inc.
0
For More Information On This Product,
0
10
10
0
shows the five CPU registers. These are hard-wired registers
Central Processor Unit (CPU)
CARRY/BORROW FLAG
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9
0
9
HALF-CARRY FLAG
INTERRUPT MASK
NEGATIVE FLAG
8
0
8
Figure 3-1. Programming Model
ZERO FLAG
Bit 7
Bit 7
Bit 7
7
1
7
1
6
6
6
1
6
6
1
5
5
5
5
5
1
H
4
4
4
4
4
3
3
3
3
3
I
N
2
2
2
2
2
1
1
1
1
1
Z
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
C
INDEX REGISTER (X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
ACCUMULATOR (A)
MC68HC705C8A — Rev. 3
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