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参数资料
| 型号： | SAB80C537-N-T85 |
| 厂商： | SIEMENS A G |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 12 MHz, MICROCONTROLLER, PQCC84 |
| 封装： | PLASTIC, LCC-84 |
| 文件页数： | 10/61页 |
| 文件大小： | 1054K |
| 代理商： | SAB80C537-N-T85 |
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SAB 80C517/80C537
Semiconductor Group
17
Program Memory
The SAB 80C517 has 8 KByte of on-chip ROM, while the SAB 80C537 has no internal ROM.
The program memory can externally be expanded up to 64 Kbyte. Pin EA controls whether
program fetches below address 2000H are done from internal or external memory.
Data Memory
The data memory space consists of an internal and an external memory space.
External Data Memory
Up to 64 KByte external data memory can be addressed by instructions that use 8-bit or 16-bit
indirect addressing. For 8-bit addressing MOVX instructions utilizing registers R0 and R1 can
be used. A 16-bit external memory addressing is supported by eight 16-bit datapointers.
Multiple Datapointers
As a functional enhancement to standard 8051 controllers, the SAB 80C517 contains eight
16-bit datapointers. The instruction set uses just one of these datapointers at a time. The
selection of the actual datapointers is done in special function register DPSEL (data pointer
select, addr. 92H). Figure 3 illustrates the addressing mechanism.
Internal Data Memory
The internal data memory is divided into three physically distinct blocks:
– the lower 128 bytes of RAM including four banks of eight registers each
– the upper 128 byte of RAM
– the 128 byte special function register area.
A mapping of the internal data memory is also shown in figure 2. The overlapping address
spaces are accessed by different addressing modes. The stack can be located anywhere in the
internal data memory.
相关PDF资料 |
PDF描述 |
|---|---|
| SAB80C517-N-T85 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC84 |
| SAB80C517-M-T40 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C517-M-T40 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C517-M-T85 | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100 |
| SAB80C537-N-T40 | 8-BIT, 12 MHz, MICROCONTROLLER, PQCC84 |
相关代理商/技术参数 |
参数描述 |
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| SAB82257N | 制造商:n/a 功能描述:82257 SIE 48 HOURS |
| SAB82257-N | 制造商:n/a 功能描述:82257 SIE 48 HOURS |
| SAB82258R | 制造商:Siemens 功能描述: |
| SAB82284 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:clock generator and ready interface for sab 80286 processors |
| SAB82284-1-P | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:clock generator and ready interface for sab 80286 processors |
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