ST72324BK2 STMicroelectronics, ST72324BK2 Datasheet - Page 135

• Manufacturer Part Number: ST72324BK2
• Description: 5V RANGE 8-BIT MCU WITH 8 TO 32K FLASH/ROM, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST72324BK2

• Hdflash Endurance: 1 kcycle at 55 °C, data retention 40 years at 85 °C
• Clock Sources: crystal/ceramic resonator oscillators, int. RC osc. and ext. clock input
• 4 Power Saving Modes: Slow, Wait, Active-halt, and Halt

ST72324Bxx
11.1.3
11.1.4
11.1.5
Table 78.
Direct
In Direct instructions, the operands are referenced by their memory address. The direct
addressing mode consists of two submodes:
Direct (short)
The address is a byte, thus requiring only one byte after the opcode, but only allows
00 - FF addressing space.
Direct (long)
The address is a word, thus allowing 64 Kbyte addressing space, but requires 2 bytes after
the opcode.
Indexed (no offset, short, long)
In this mode, the operand is referenced by its memory address, which is defined by the
unsigned addition of an index register (X or Y) with an offset.
The indexed addressing mode consists of three submodes:
Indexed (no offset)
There is no offset, (no extra byte after the opcode), and it allows 00 - FF addressing space.
Indexed (short)
The offset is a byte, thus requiring only one byte after the opcode and allows 00 - 1FE
addressing space.
Indexed (long)
The offset is a word, thus allowing 64 Kbyte addressing space and requires 2 bytes after the
opcode.
Indirect (short, long)
The required data byte to do the operation is found by its memory address, located in
memory (pointer).
The pointer address follows the opcode. The indirect addressing mode consists of two
submodes:
LD
CP
BCP
AND, OR, XOR
ADC, ADD, SUB, SBC
.
Immediate instructions
Instruction
Load
Compare
Bit compare
Logical operations
Arithmetic operations
Function
Instruction set
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