NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 65

• Manufacturer Part Number: NS7520B-1-C36
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-C36

• Applications: Network Processor
• Core Processor: ARM7
• Program Memory Type: External Program Memory
• Controller Series: -
• Ram Size: External
• Interface: EBI/EMI, Ethernet, DMA, SPI, UART
• Number Of I /o: 16
• Voltage - Supply: 1.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 177-LFBGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Serial internal/external timing
Operating conditions:
Note:
Serial internal timing characteristics
Serial external timing characteristics
Temperature:
Voltage:
Output load:
Input drive:
76
77
78
79
* The T
80
81
82
83
84
* The T
Num
Num
SYS
SYS
SCLK to ENABLE high
SCLK to TXD (PORTA7/C7)
RXD (PORTA3/C3) setup to SCLK
RXD hold to SCLK
SCLK frequency
SCLK duty cycle
SCLK to ENABLE
SCLK to TXD (PORTA7/C7)
RXD (PORTA3/C3) setup to SCLK
RXD hold to SCLK
Description
Description
parameter represents one period of the internal system clock.
parameter represents one period of the internal system clock.
SPI timing diagrams are in Chapter 10, "Serial Controller Module." See Figure 25, "SPI
master mode 0 and 1 two-byte transfer," on page 219 and Figure 26, "SPI slave mode 0
and 1 two-byte transfer," on page 222. Only SPI modes 0 and 1 are supported.
-15.00 (min)
1.60 (min)
25.0pf
CMOS buffer
110.00 (max)
1.40 (max)
1
1
1
45
1
2
1.5
Min
Min
w w w . d i g i . c o m
1 T
10
55
2T
Max
Max
SYS
SYS
S e r i a l i n t e r n a l / e x t e r n a l t i m i n g
*
*
T
ns
ns
ns
MHz
%
T
ns
ns
ns
Unit
Unit
SCLK
SCLK
6 1