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參數(shù)資料
| 型號： | TSC80251G2D-16CB |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8/16-bit Microcontroller with Serial Communication Interfaces |
| 中文描述： | 16位產(chǎn)品微控制器的串行通信接口 |
| 文件頁數(shù)： | 9/63頁 |
| 文件大?。?/td> | 878K |
| 代理商： | TSC80251G2D-16CB |
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Rev. A - May 7, 1999
9
TSC80251G2D
6. Address Spaces
The TSC80251G2D derivatives implement four different address spaces:
G
On-chip ROM program/code memory (not present in ROMless devices)
G
On-chip RAM data memory
G
Special Function Registers (SFRs)
G
Configuration array
6.1 Program/Code Memory
The TSC83251G2D and TSC87251G2D implement 32 Kbytes of on-chip program/code memory. Figure 5 shows
the split of the internal and external program/code memory spaces. If EA# is tied to a high level, the 32-Kbyte
on-chip program memory is mapped in the lower part of segment FF: where the C251 core jumps after reset. The
rest of the program/code memory space is mapped to the external memory. If EA# is tied to a low level, the
internal program/code memory is not used and all the accesses are directed to the external memory.
The TSC83251G2D products provide the internal program/code memory in a masked ROM memory while the
TSC87251G2D products provide it in an EPROM memory. For the TSC80251G2D products, there is no internal
program/code memory and EA# must be tied to a low level.
Figure 5. Program/Code Memory Mapping
Notes:
Special care should be taken when the Program Counter (PC) increments:
1. If the program executes exclusively from on-chip code memory (not from external memory), beware of executing code from the upper eight
bytes of the on-chip ROM (FF:7FF8h-FF:7FFFh). Because of its pipeline capability, the TSC80251G2D derivative may attempt to prefetch
code from external memory (at an address above FF:7FFFh) and thereby disrupt I/O Ports 0 and 2. Fetching code constants from these
8 bytes does not affect Ports 0 and 2.
2. When PC reaches the end of segment FF:, it loops to the reset address FF:0000h (for compatibility with the C51 Architecture). When PC
increments beyond the end of segment FE:, it continues at the reset address FF:0000h (linearity). When PC increments beyond the end of
segment 01:, it loops to the beginning of segment 00: (this prevents from its going into the reserved area).
On-chip ROM/EPROM
Code Memory
Program/code
Segments
Program/code
External Memory Space
32 Kbytes
EA#= 0
EA#= 1
32 Kbytes
32 Kbytes
Reserved
64 Kbytes
128 Kbytes
FF:FFFFh
FF:8000h
FF:7FFFh
FF:0000h
FE:FFFFh
FE:0000h
FD:FFFFh
01:FFFFh
01:0000h
00:FFFFh
02:0000h
00:0000h
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| TSC80251G2D-16CBR | 功能描述:IC MCU 8BIT 16MHZ HI SPD 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CB | 功能描述:IC C251 MCU ROMLESS 5V 44PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CBR | 制造商:Atmel Corporation 功能描述:MCU 8-bit/16-bit 8x251 C251 CISC ROMLess 3.3V/5V 44-Pin PLCC |
| TSC80251G2D-24CE | 功能描述:IC C251 MCU ROMLESS 5V 44VQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:8x251 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TSC80251G2D-24CED | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8/16-bit Microcontroller with Serial Communication Interfaces |
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