MC68HC705T16 MOTOROLA [Motorola, Inc], MC68HC705T16 Datasheet - Page 93
MC68HC705T16
Manufacturer Part Number
MC68HC705T16
Description
High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC705T16.pdf
(128 pages)
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This section provides a description of the CPU core registers, the instruction set and the
addressing modes of the MC68HC05L1.
11.1
The MCU contains five registers, as shown in the programming model of Figure 11-1. The interrupt
stacking order is shown in Figure 11-2.
11.1.1
The accumulator is a general purpose 8-bit register used to hold operands and results of
arithmetic calculations or data manipulations.
MC68HC05L1
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 11-1 Programming model
1 1 1 H I N Z C
7
7
7
7
7
11
0
0
0
0
0
Accumulator
Index register
Program counter
Stack pointer
Condition code register
Carry / borrow
Zero
Negative
Interrupt mask
Half carry
MOTOROLA
TPG
11-1
11
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