MC68HC705SR3CP Freescale Semiconductor, MC68HC705SR3CP Datasheet - Page 55

• Manufacturer Part Number: MC68HC705SR3CP
• Description: IC MCU 3.75K 2.1MHZ OTP 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705SR3CP

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LED, POR
• Number Of I /o: 32
• Program Memory Size: 3.75KB (3.75K x 8)
• Program Memory Type: OTP
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

This section provides a description of the CPU core registers, the instruction set and the
addressing modes of the MC68HC05SR3.
8.1
The MCU contains five registers, as shown in the programming model of Figure 8-1. The interrupt
stacking order is shown in Figure 8-2.
8.1.1
The accumulator is a general purpose 8-bit register used to hold operands and results of
arithmetic calculations or data manipulations.
MC68HC05SR3
CPU CORE AND INSTRUCTION SET
Registers
Accumulator (A)
15
15
0
0 0 0 0 0 0 0 1 1
CPU CORE AND INSTRUCTION SET
Figure 8-1 Programming model
1 1 1 H I N Z C
7
7
7
7
7
8
0
0
0
0
0
Accumulator
Index register
Program counter
Stack pointer
Condition code register
Carry / borrow
Zero
Negative
Interrupt mask
Half carry
Freescale
TPG
8-1
8