XC68HC705B32CFN Freescale Semiconductor, XC68HC705B32CFN Datasheet - Page 117

• Manufacturer Part Number: XC68HC705B32CFN
• Description: IC MCU 2.1MHZ 32K OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 256 x 8
• Ram Size: 528 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

This section provides a description of the CPU core registers, the instruction set and the
addressing modes of the MC68HC05B6.
10.1
The MCU contains five registers, as shown in the programming model of
stacking order is shown in
MC68HC05B6
Rev. 4.1
CPU CORE AND INSTRUCTION SET
Increasing
memory
address
Registers
15
15
0
0 0 0 0 0 0 0 1 1
Unstack
Figure
CPU CORE AND INSTRUCTION SET
7
Figure 10-1 Programming model
10-2.
Figure 10-2 Stacking order
1 1 1 H I N Z C
7
7
7
7
7
Condition code register
Program counter high
Program counter low
Index register
Accumulator
10
0
0
0
0
0
Accumulator
Index register
Program counter
Stack pointer
Condition code register
Carry / borrow
Zero
Negative
Interrupt mask
Half carry
0
Stack
Figure
Decreasing
memory
address
10-1. The interrupt
Freescale
10-1
10