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参数资料
| 型号： | ST52E430B/D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, UVPROM, 20 MHz, MICROCONTROLLER, CDIP32 |
| 封装： | WINDOWED, SHRINK, CERAMIC, DIP-32 |
| 文件页数： | 24/120页 |
| 文件大小： | 502K |
| 代理商： | ST52E430B/D |
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ST52T430/E430
PROGRAM COUNTER
RAM
REG 0
REG 1
REG 2
REG 3
REG 4
REG 5
REG 255
REG 254
REG 253
REG 252
STACK LEVEL 1
STACK LEVEL 2
..........................
STACK LEVEL n
WHEN CALL OR
INTERRUPT REQ.
WHEN RETI OR RET
OCCURS
Stack
Pointer
Figure 2.6. Stack Operation
The Carry flag is set when an overflow occurs
during arithmetic operations, otherwise it is
cleared.
The Sign flag is set when an underflow occurs
during arithmetic operations, otherwise it is
cleared.
2.2 ADDRESS SPACES
ST52x430 has four separate address spaces:
n
RAM: 256 Bytes
n
Input Registers: 20 8-bit registers
n
Output Registers 10 8-bit registers
n
Configuration Registers: 21 8-bit registers
n
Program memory up to 8K Bytes
The Program memory will be described in further
details in the MEMORY section
2.2.1 RAM and STACK
The RAM memory consists of 256 general purpose
8-bit RAM registers.
All the registers in the RAM can be specified by
using a decimal address, e.g. 0 identifies the first
register of the RAM.
A RAM register is read in 2 cycles and is written in 3
cycles. To read or write the RAM registers the
LOAD instructions must be used. See table 2.6
Each interrupt level has its own set of flags, that is
saved in the STACK together with the Program
Counter. These flags are restored from the STACK
automatically, when a RETI instruction is executed.
When the instructions like Interrupt request or
CALL are executed, a STACK level is used to push
the PC and flags.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST52E430K1B6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
| ST52E430K1M6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
| ST52E430K1T6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
| ST52E430K2B6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
| ST52E430K2M6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-BIT INTELLIGENT CONTROLLER UNIT ICU Three Timer/PWMs, ADC, SCI |
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