參數(shù)資料
型號(hào): AT80251G2D-3CSUM
廠商: Atmel
文件頁(yè)數(shù): 4/77頁(yè)
文件大小: 0K
描述: IC 8051 MCU ROMLESS 40DIP
標(biāo)準(zhǔn)包裝: 216
系列: 8x251
核心處理器: C251
芯體尺寸: 8/16-位
速度: 24MHz
連通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器類型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
12
AT/TSC8x251G2D
4135F–8051–11/06
compatibility with the C51 Architecture). When PC increments beyond the end of seg-
ment 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).
Data Memory
The TSC80251G2D derivatives implement 1 Kbyte of on-chip data RAM. Figure 5
shows the split of the internal and external data memory spaces. This memory is
mapped in the data space just over the 32 bytes of registers area (see TSC80251 Pro-
grammers’ Guide). Hence, the part of the on-chip RAM located from 20h to FFh is bit
addressable. This on-chip RAM is not accessible through the program/code memory
space.
F o r f a st er com put atio n w i th t he on- chip R O M / EPR O M cod e o f the
TSC83251G2D/TSC87251G2D, its upper 16 KB are also mapped in the upper part of
the region 00: if the On-Chip Code Memory Map configuration bit is cleared (EMAP# bit
in UCONFIG1 byte, see Figure ). However, if EA# is tied to a low level, the
TSC80251G2D derivative is running as a ROMless product and the code is actually
fetched in the corresponding external memory (i.e. the upper 16 KB of the lower 32 KB
of the segment FF:). If EMAP# bit is set, the on-chip ROM is not accessible through the
region 00:.
All the accesses to the portion of the data space with no on-chip memory mapped onto
are redirected to the external memory.
Figure 5.
Data Memory Mapping
On-chip ROM/EPROM
Code Memory
Data Segments
Data External
Memory Space
16 KB
EA# = 0
EA# = 1
32 KB
Reserved
64 KB
47 KB
FF:FFFFh
FF:8000h
FF:7FFFh
FF:0000h
FE:FFFFh
FE:0000h
FD:FFFFh
01:FFFFh
01:0000h
02:0000h
00:FFFFh
00:0420h
32 bytes reg.
RAM Data
1 Kbyte
16 KB
00:C000h
00:BFFFh
EMAP# = 1
EMAP# = 0
16 KB
64 KB
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AT80251G2D-RLRUL 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
AT80251G2D-RLTUL 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
AT80251G2D-RLTUM 功能描述:8位微控制器 -MCU 251G2D ROMless 8/ 16bit C 5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
AT80251G2D-SLRUL 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
AT80251G2D-SLRUM 功能描述:8位微控制器 -MCU ROMless 8/16bit 5V 24MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT