NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 33
![no-image](/images/manufacturer_photos/0/1/193/digi_international_sml.jpg)
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
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“No connect” pins
General-purpose I/O
Table 8: “No connect” pins
Note:
Table 9: GPIO pinout
R13
P12
N12
R15
M11
P11
N11
R12
R14
P13
PORTA7
PORTA6
PORTA5
Pin
GPIO
signal
If your design implements 10–20K ohm pullups instead of pulldowns on
R13 and P12, and a pullup on N12 instead of GND, no action is required.
TXDA
DTRA_
RTSA_
Serial
signal
Add a 15K ohm pulldown to GND (15K ohm is the recommended value; 10–
XTALB2: NO CONNECT
Add a 15K ohm pulldown to GND (15K ohm is the recommended value; 10–
20K ohms is acceptable)
20K ohms is acceptable)
Tie to GND
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
Description
DREQ1_
Other
signal
J14 U
J13 U
J15 U
Pin
I/O
I/O
I/O
I/O
w w w . d i g i e m b e d d e d . c o m
2
2
2
OD
Channel 1 TXD
Channel 1 DTR_
Channel 1 RTS_
Serial channel
description
P i n o u t a n d P a c k a g i n g
DMA channel 3/5
Req
Other
description
2 1
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