NS7520B-1-C55 Digi International, NS7520B-1-C55 Datasheet - Page 29
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NS7520B-1-C55
Manufacturer Part Number
NS7520B-1-C55
Description
IC ARM MICROPROCESSOR 177BGA
Manufacturer
Digi International
Series
NET+ARM®r
Specifications of NS7520B-1-C55
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
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-C55
Manufacturer:
IR
Quantity:
4 954
Company:
Part Number:
NS7520B-1-C55
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-C55
Manufacturer:
NETARM
Quantity:
20 000
A C c h a r a c t e r i s t i c s
Figure 6: Internal pulldown characteristics
AC characteristics
AC electrical specifications define the timing relationship between signals for interfaces and modes
within a given interface.
AC electrical specifications
The AC electrical specifications are based on the system configuration shown in Figure 7, with a
5pF allowance for PCB capacitance and a 0.25 ns allowance for PCB delay. The timing of the
buffers, SDRAM, and the like must be added to complete timing analysis. In systems where SDRAM is
not used, two devices are expected to replace the SDRAMs shown in Figure 7; that is, they are tied
directly to the chip. System loading information is shown in Table 7: "System loading details" on
page 26.
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