參數(shù)資料
型號: NS7520B-1-I55
廠商: Digi International
文件頁數(shù): 62/68頁
文件大?。?/td> 0K
描述: IC ARM MICROPROCESSOR 177BGA
標準包裝: 160
系列: NET+ARM®
應用: 網(wǎng)絡處理器
核心處理器: ARM7
程序存儲器類型: 外部程序存儲器
RAM 容量: 外部
接口: EBI/EMI,以太網(wǎng),DMA,SPI,UART
輸入/輸出數(shù): 16
電源電壓: 1.4 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 177-LFBGA
包裝: 托盤
供應商設備封裝: 177-BGA(13x13)
Serial in te rn al/external tim i ng
ww w.d i gi .c om
61
Serial internal/external timing
Operating conditions:
Note:
and 1 two-byte transfer," on page 222. Only SPI modes 0 and 1 are supported.
Serial internal timing characteristics
Serial external timing characteristics
Temperature:
-15.00 (min)
110.00 (max)
Voltage:
1.60 (min)
1.40 (max)
Output load:
25.0pf
Input drive:
CMOS buffer
Num
Description
Min
Max
Unit
76
SCLK to ENABLE high
1
TSCLK
77
SCLK to TXD (PORTA7/C7)
1 TSYS*ns
78
RXD (PORTA3/C3) setup to SCLK
1
ns
79
RXD hold to SCLK
1
ns
* The TSYS parameter represents one period of the internal system clock.
Num
Description
Min
Max
Unit
80
SCLK frequency
10
MHz
SCLK duty cycle
45
55
%
81
SCLK to ENABLE
1
TSCLK
82
SCLK to TXD (PORTA7/C7)
2TSYS*ns
83
RXD (PORTA3/C3) setup to SCLK
2
ns
84
RXD hold to SCLK
1.5
ns
* The TSYS parameter represents one period of the internal system clock.
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