ST72325R6-AUTO STMicroelectronics, ST72325R6-AUTO Datasheet - Page 43
ST72325R6-AUTO
Manufacturer Part Number
ST72325R6-AUTO
Description
8-bit Mcu For Automotive With 16 To 60 Kbyte Flash, Adc, Css, 5 Timers, Spi, Sci, I2c Interface
Manufacturer
STMicroelectronics
Datasheet
1.ST72325R6-AUTO.pdf
(250 pages)
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ST72325xxx-Auto
5
5.1
5.2
5.3
Central processing unit (CPU)
Introduction
This CPU has a full 8-bit architecture and contains six internal registers allowing efficient 8-
bit data manipulation.
Main features
●
●
●
●
●
●
●
●
CPU registers
The six CPU registers shown in
accessed by specific instructions.
Figure 8.
Reset value = reset vector @ FFFEh-FFFFh
Reset value = stack higher address
15
15
Enable executing 63 basic instructions
Fast 8-bit by 8-bit multiply
17 main addressing modes (with indirect addressing mode)
Two 8-bit index registers
16-bit stack pointer
Low power Halt and Wait modes
Priority maskable hardware interrupts
Non-maskable software/hardware interrupts
CPU registers
PCH
Reset value = 1
8
8 7
Reset value = XXh
Reset value = XXh
Reset value = XXh
7
7
7
1
7
7
1 I1 H I0 N Z
1 1 X 1 X X
Figure 8
PCL
are not present in the memory mapping and are
0
0
0
0
0
0
C
X
Accumulator
X index register
Y index register
Program counter
Condition code register
Stack pointer
Central processing unit (CPU)
X = undefined value
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