NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 273

• Manufacturer Part Number: NS7520B-1-I46
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-I46

• 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

Absolute maximum ratings
AC electrical specifications
AC characteristics
Table 99 defines the maximum values for the voltages that the NS7520 can withstand
without being damaged.
Table 99: Maximum voltage ratings
AC electrical specifications define the timing relationship between signals for
interfaces and modes within a given interface.
The AC electrical specifications are based on the system configuration shown in
Figure 30, with a 5pF allowance for PCB capacitance and a 0.25 ns allowance for PCB
delay. The timing of the buffers, SDRAM, and the like must be added to complete
timing analysis. In systems where SDRAM is not used, two devices are expected to
replace the SDRAMs shown in Figure 30; that is, they are tied directly to the chip.
System loading information is shown in Table 100: "System loading details" on page
262.
V
V
V
V
Sym
DD
CC
IN
OUT
Core supply voltage
I/O supply voltage
Input voltage
Output voltage
Parameter
-0.3
-0.3
-0.3
-0.3
Min
w w w . d i g i e m b e d d e d . c o m
3.15
3.9
3.9
3.9
Max
E l e c t r i c a l C h a r a c t e r i s t i c s
2 6 1