NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 294

• 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 8 2
T i m i n g D i a g r a m s
SDRAM load mode
SDRAM refresh
CAS0* (A10/AP)
CAS0* (A10/AP)
CAS3* (RAS)
CAS2* (CAS)
CAS1* (WE)
CAS3* (RAS)
CAS2* (CAS)
CAS1* (WE)
CS[4:0]*
CS[4:0]*
BCLK
A[13:0]
BCLK
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
27
34
34
prechg
27
34
34
prechg
27
34
34
34
34
34
34
inhibit
nop
27
34
34
refresh
34
34
34
35
load
op code
27
34
27
34
34
35