NS7520B-1-C55 Digi International, NS7520B-1-C55 Datasheet - Page 3
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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
Contents
NS7520 Overview........................................................................... 1
Key Features................................................................................ 2
Operating frequency ...................................................................... 3
Packaging and pinout ..................................................................... 4
Pinout detail tables ....................................................................... 6
NS7520 modules........................................................................... 18
NS7520 bootstrap initialization ......................................................... 22
DC characteristics and other operating specifications.............................. 23
AC characteristics ........................................................................ 25
Oscillator Characteristics................................................................ 27
Timing Diagrams .......................................................................... 28
System Bus interface............................................................. 6
Chip select controller........................................................... 10
Ethernet interface MAC......................................................... 11
“No connect” pins ............................................................... 13
General Purpose I/O ............................................................ 13
System clock and reset ......................................................... 15
System mode (test support) ................................................... 16
JTAG test ......................................................................... 16
Power supply ..................................................................... 17
CPU module ...................................................................... 18
GEN module ...................................................................... 18
System (SYS) module............................................................ 18
BBus module...................................................................... 19
Memory module (MEM).......................................................... 19
DMA controller ................................................................... 19
Ethernet controller.............................................................. 19
Serial controller ................................................................. 21
JTAG ............................................................................... 22
ARM Debug........................................................................ 22
Absolute maximum ratings..................................................... 24
Pad pullup and pulldown characteristics .................................... 24
AC electrical specifications .................................................... 25
Timing_Specifications........................................................... 28
Reset_timing ..................................................................... 29
SRAM timing ...................................................................... 30
SDRAM timing .................................................................... 40
FP DRAM timing .................................................................. 48
Ethernet timing .................................................................. 55
JTAG timing ...................................................................... 57
External DMA timing ............................................................ 59
Serial internal/external timing................................................ 61
GPIO timing....................................................................... 63
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