NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 39
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NS7520B-1-C36
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-C36
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-C36
Manufacturer:
NETARM
Quantity:
20 000
SRAM burst write
CS controlled, four word (4-2-2-2), burst write (wait = 2, BCYC = 01)
Notes:
1
2
3
4
TEA*/LAST (Note-4)
BE[3:0]* (Note-2)
If the next transfer is DMA, null periods between memory transfers can occur. Thirteen clock
pulses are required for DMA context switching.
Port size determines which byte enable signals are active:
–
–
–
The TW cycles are present when the WAIT field is set to 2 or more.
The TA* and TEA*/LAST signals are for reference only.
TA* (Note-4)
write D[31:0]
Sync WE*
CS0WE*
CS[4:0]*
A[27:0]
8-bit port = BE3*
16-bit port = BE[3:0]
32-bit port = BE[3:0]
BCLK
RW*
6
36
12
T1
29
27
9
19
TW
TW
30
T2
30
TW
T2
TW
w w w . d i g i . c o m
T2
TW
31
T2
Note-1
31
36
27
13
19
29
T1
S R A M t i m i n g
3 5