NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 276

• 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

2 6 4
O s c i l l a t o r C h a r a c t e r i s t i c s
Figure 31: Oscillator circuit details
Rise time = 18ns;
0.8V to 2.0V
3R3V
RESET_
TB1
100nF
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
Optional 36.864-55.296MHz Oscillator
PLL bypassed - U1 & R2 OUT, R1 IN
C3
A 18.432MHz crystal or 55.296MHz
oscillator allows full speed operation.
PLL enabled - U1 & R2 IN, R1 OUT
4
2
1
C1
10pF
C2
10pF
1
2
Y2
SM_Oscillator
VCC
GND
TEST
U1
NC
LVC04
10-20MHz
OUT
X2
3
5
4
3
3R3V
R3
1M
R2
0 OHM
100 OHM
0 OHM
R4
R11
XTAL1
XTAL2
R1
10K
K14
K12
L13
A10
SCANEN_
RESET_
XTAL1
XTAL2
NS7520