ST72345C4 STMicroelectronics, ST72345C4 Datasheet - Page 193

• Manufacturer Part Number: ST72345C4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72345C4

• Up To 16 Kbytes Program Memory: single voltage extended Flash (XFlash) with readout and write protection, in-circuit and inapplication programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• 256 Bytes Data Eeprom With Readout Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• Clock Sources: crystal/ceramic resonator oscillators, high-accuracy internal RC oscillator or external clock
• 5 Power-saving Modes: Slow, Wait, Halt, Auto-wakeup from Halt and Active-halt
• 16-bit Timer A With: 1 input capture, 1 output compares, external clock input, PWM and pulse generator modes
• 16-bit Timer B With: 2 input captures, 2 output compares, PWM and pulse generator modes

ST72344xx ST72345xx
12.1.5
12.1.6
Indexed (No offset)
There is no offset (no extra byte after the opcode), and allows 00 - FF addressing space.
●
●
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:
Indirect (Short)
The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing
space, and requires 1 byte after the opcode.
Indirect (Long)
The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing
space, and requires 1 byte after the opcode.
Indirect Indexed (Short, Long)
This is a combination of indirect and short indexed addressing modes. The operand is
referenced by its memory address, which is defined by the unsigned addition of an index
register value (X or Y) with a pointer value located in memory. The pointer address follows
the opcode.
The indirect indexed addressing mode consists of two submodes:
Indirect Indexed (Short)
The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing
space, and requires 1 byte after the opcode.
Indirect Indexed (Long)
The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing
space, and requires 1 byte after the opcode.
Indexed (Short)
The offset is a byte, thus requires only 1 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.
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