NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 292
![no-image](/images/manufacturer_photos/0/1/193/digi_international_sml.jpg)
NS7520B-1-I46
Manufacturer Part Number
NS7520B-1-I46
Description
IC ARM MICROPROCESSOR 177BGA
Manufacturer
Digi International
Series
NET+ARM®r
Specifications of NS7520B-1-I46
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-I46
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-I46
Manufacturer:
NETARM
Quantity:
20 000
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2 8 0
T i m i n g D i a g r a m s
SDRAM write
SDRAM write
Notes:
1
2
3
TEA*/LAST* (Note-3)
Non-muxed address
CAS0* (A10/AP)
BE[3:0]* (DQM)
Port size determines which byte enable signals are active:
–
–
–
The precharge and/or active commands are not always present. These
commands depend on the address of the previous SDRAM access.
The TA* and TEA*/LAST signals are for reference only.
Muxed address
PortA2/AMUX
CAS3* (RAS)
CAS2* (CAS)
TA* (Note-3)
write D[31:0]
CAS1* (WE)
CS[4:0]*
8-bit port = BE3*
16-bit port = BE[3:2]
32-bit port = BE[3:0]
N S 7 5 2 0 H a r d w a r e R e f e r e n c e , R e v G 9 / 2 0 0 7
BCLK
RW*
Note-1
6
35
36
27
34
34
12
prechg
T1
9
34
34
active
A10
30
31
37
35
34
34
34
34
write
T2
30
31
37
36
13
27
34
34
34
inhibit
T1
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