NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 26

• 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

1 4
P i n o u t d e t a i l t a b l e s a n d s i g n a l d e s c r i p t i o n s
Table 2: System bus interface pinout
DATA11
DATA10
DATA9
DATA8
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
BE3_
BE2_
BE1_
BE0_
TS_
TA_
TEA_
RW_
BR_
Symbol
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
F4
F2
F3
E1
E2
E3
D1
C1
B1
D4
D3
C2
D9
A9
C9
B9
A8 U
D8 U
C8 U
D6
D7
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
NO CONNECT
I/O
4
4
4
4
4
4
4
4
4
4
4
4
2
2
2
2
4
4
4
2
OD
Byte enable D31:D24
Byte enable D23:D16
Byte enable D15:D08
Byte enable D07:D00
DO NOT USE
Add an external 820 ohm pullup to 3.3 V.
Data transfer acknowledge
Add an external 820 ohm pullup to 3.3 V.
TA_ is bidirectional. It is used in input mode to
terminate a memory cycle externally. It is used in
output mode for reference purposes only.
Data transfer error acknowledge
Add an external 820 ohm pullup to 3.3 V.
TEA_ is bidirectional. It is used in input mode to
terminate a memory cycle externally. It is used in
output mode for reference purposes only.
Transfer direction
Description