参数资料
型号: SAB80C517A-N18-T3
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
封装: PLASTIC, LCC-84
文件页数: 13/137页
文件大小: 2089K
代理商: SAB80C517A-N18-T3
Semiconductor Group
3 - 3
Memory Organization
3.2
Data Memory
The data memory space consists of an internal and an external memory space. The SAB 80C517A
contains another 2 kByte of On-Chip RAM above the 256 Bytes internal RAM of the base type
SAB 80C517. This RAM is called XRAM in this document.
– 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 in combination with registers
R0 and R1 can be used. A 16-bit external memory addressing is supported by eight 16-bit
datapointers. Registers XPAGE and SYSCON are controlling whether data fetches at
addresses F800H to FFFFH are done from internal XRAM or from external data memory.
– Internal Data Memory
The internal data memory is divided into four physically distinct blocks:
– the lower 128 bytes of RAM including four banks containing eight registers each
– the upper 128 byte of RAM
– the 128 byte special function register area
– a 2Kx8 area which is accessed like external RAM (MOVX-instructions), called XRAM
implemented on chip at the address range fromF800H to FFFFH. Special Function
Register SYSCON controls whether data is read or written (to) XRAM or external RAM
相关PDF资料
PDF描述
SAB83C517A-N18-T4 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
SAB80C517A-S18-T3 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100
SAB83C517A-5S18-T3 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100
SAB83C517A-5S18-T4 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100
SAB80C517A-S18-T3 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100
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