參數資料
型號： ST72F321J9T5
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
封裝： 10 X 10 MM, PLASTIC, TQFP-44
文件頁數： 87/176頁
文件大?。?/td> 1112K
代理商： ST72F321J9T5
ST72321J
18/176
5 CENTRAL PROCESSING UNIT
5.1 INTRODUCTION
This CPU has a full 8-bit architecture and contains
six internal registers allowing efficient 8-bit data
manipulation.
5.2 MAIN FEATURES
s
Enable executing 63 basic instructions
s
Fast 8-bit by 8-bit multiply
s
17 main addressing modes (with indirect
addressing mode)
s
Two 8-bit index registers
s
16-bit stack pointer
s
Low power HALT and WAIT modes
s
Priority maskable hardware interrupts
s
Non-maskable software/hardware interrupts
5.3 CPU REGISTERS
The 6 CPU registers shown in Figure 7 are not
present in the memory mapping and are accessed
by specific instructions.
Accumulator (A)
The Accumulator is an 8-bit general purpose reg-
ister used to hold operands and the results of the
arithmetic and logic calculations and to manipulate
data.
Index Registers (X and Y)
These 8-bit registers are used to create effective
addresses or as temporary storage areas for data
manipulation. (The Cross-Assembler generates a
precede instruction (PRE) to indicate that the fol-
lowing instruction refers to the Y register.)
The Y register is not affected by the interrupt auto-
matic procedures.
Program Counter (PC)
The program counter is a 16-bit register containing
the address of the next instruction to be executed
by the CPU. It is made of two 8-bit registers PCL
(Program Counter Low which is the LSB) and PCH
(Program Counter High which is the MSB).
Figure 6. CPU Registers
ACCUMULATOR
X INDEX REGISTE R
Y INDEX REGISTE R
STACK POINTER
CONDITIO N CODE REGIST ER
PROGRAM COUNTER
70
1C
1I1 H I0 N Z
RESET VALUE = RESET VECTOR @ FFFEh-FFFFh
70
0
7
15
8
PCH
PCL
15
87
0
RESET VALUE = STACK HIGHER ADDRESS
RESET VALUE = 1X
11X 1X X
RESET VALUE = XXh
X = Undefined Value
相關PDF資料
PDF描述
ST72F324BJ6B6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
ST72F324BK6T6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
ST72F324BK4T6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
ST72F324BJ4B5 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
ST72F324BJ2B5 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
相關代理商/技術參數
參數描述
ST72F321J9T6 功能描述:8位微控制器 -MCU Flash 60K SPI/SCI/I2 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ST72F321J9TA 功能描述:8位微控制器 -MCU AUTO 8BIT MICRO RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ST72F321J9TAE 功能描述:8位微控制器 -MCU 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
ST72F321J9TAS 制造商:STMicroelectronics 功能描述:
ST72F321J9TC 功能描述:8位微控制器 -MCU Flask 60K SPI/SCI/I2 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯系方式

*
*
*