參數(shù)資料
型號(hào): TSC80251G2D-L16CE
廠商: Atmel
文件頁(yè)數(shù): 10/77頁(yè)
文件大?。?/td> 0K
描述: IC MCU 8BIT 16MHZ LO VOLT 44VQFP
標(biāo)準(zhǔn)包裝: 160
系列: 8x251
核心處理器: C251
芯體尺寸: 8/16-位
速度: 16MHz
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): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LQFP
包裝: 托盤
18
AT/TSC8x251G2D
4135F–8051–11/06
Table 11.
Configuration Byte 0
UCONFIG0
Notes: 1. UCONFIG0 is fetched twice so it can be properly read both in Page or Non-Page
modes. If P2.1 is cleared during the first data fetch, a Page mode configuration is
used, otherwise the subsequent fetches are performed in Non-Page mode.
2. This selection provides compatibility with the standard 80C51 hardware which is mul-
tiplexing the address LSB and the data on Port 0.
7654
3210
-
WSA1#
WSA0#
XALE#
RD1
RD0
PAGE#
SRC
Bit Number
Bit
Mnemonic
Description
7-
Reserved
Set this bit when writing to UCONFIG0.
6WSA1#
Wait State A bits
Select the number of wait states for RD#, WR# and PSEN# signals for external
memory accesses (all regions except 01:).
WSA1#
WSA0#
Number of Wait States
00
3
01
2
10
1
11
0
5WSA0#
4XALE#
Extend ALE bit
Clear to extend the duration of the ALE pulse from TOSC to 3TOSC.
Set to minimize the duration of the ALE pulse to 1TOSC.
3
RD1
Memory Signal Select bits
Specify a 18-bit, 17-bit or 16-bit external address bus and the usage of RD#,
WR# and PSEN# signals (see Table 13).
2
RD0
1PAGE#
Page Mode Select bit(1)
Clear to select the faster Page mode with A15:8/D7:0 on Port 2 and A7:0 on
Port 0.
Set to select the non-Page mode(2) with A15:8 on Port 2 and A7:0/D7:0 on Port
0.
0SRC
Source Mode/Binary Mode Select bit
Clear to select the binary mode.
Set to select the source mode.
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