MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 214

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

CPU Core and Instruction Set
11.3 Registers
11.3.1 Accumulators A, B and D
Technical Data
Condition code register
7
15
15
15
15
15
Accumulator A
M68HC11 CPU registers are an integral part of the CPU and are not
addressed as if they were memory locations. The seven registers are
shown in
Accumulators A and B are general-purpose 8-bit registers that hold
operands and results of arithmetic calculations or data manipulations.
For some instructions, these two accumulators are treated as a single
double-byte (16-bit) accumulator called accumulator D. Although most
operations can use accumulators A or B interchangeably, the following
exceptions apply:
Freescale Semiconductor, Inc.
•
•
For More Information On This Product,
Figure 11-1. Programming model
The ABX and ABY instructions add the contents of 8-bit
accumulator B to the contents of 16-bit register X or Y, but there
are no equivalent instructions that use A instead of B.
The TAP and TPA instructions transfer data from accumulator A
to the condition code register, or from the condition code register
Double accumulator D
Program counter
Figure 11-1
Index register X
Index register Y
Stack pointer
CPU Core and Instruction Set
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0
7
S
X H I N Z V
Accumulator B
and are discussed in the following paragraphs.
C
0
0
0
0
0
0
A:B
D
IX
IY
SP
PC
CCR
Carry
Overflow
Zero
Negative
I interrupt mask
Half carry (from bit 3)
X interrupt mask
Stop disable
MC68HC11P2 — Rev 1.0