NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 308

• 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

2 9 6
T i m i n g D i a g r a m s
Memory-to-memory external DMA
Notes:
1
2
Mem signals (Note-2)
A null period sometimes occurs between memory cycles.
The memory signals are data[31:0], addr[27:0], BE[3:0], CS/RAS[4:0], CAS[3:0],
RW, OE*. WE*, and PORTA2/AMUX. The timing of these signals depends on how
the memory is configured (Sync SRAM, Async SRAM, FP DRAM, or SDRAM).
DONE* (output)
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
DACK*
DREQ*
BCLK
R/W
72
75
T1
TW
70
T2
71
Note-1
72
75
72
75
T1
TW
70
T2
71
72
75