ADSP-2185NKST-320 Analog Devices Inc, ADSP-2185NKST-320 Datasheet - Page 35

• Manufacturer Part Number: ADSP-2185NKST-320
• Description: IC DSP CONTROLLER 16BIT 100LQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2185NKST-320

• Rohs Status: RoHS non-compliant
• Interface: Host Interface, Serial Port
• Clock Rate: 80MHz
• Non-volatile Memory: External
• On-chip Ram: 80kB
• Voltage - I/o: 1.8V, 2.5V, 3.3V
• Voltage - Core: 1.80V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Device Core Size: 16b
• Architecture: Enhanced Harvard
• Format: Fixed Point
• Clock Freq (max): 80MHz
• Mips: 80
• Device Input Clock Speed: 80MHz
• Ram Size: 80KB
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Operating Supply Voltage (min): 1.71V
• Operating Supply Voltage (max): 1.89/3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / Rohs Status: Not Compliant

IDMA Write, Short Write Cycle
Table 22. IDMA Write, Short Write Cycle
1
2
3
4
Parameter
Timing Requirements:
t
t
t
t
Switching Characteristic:
t
Start of Write = IS Low and IWR Low.
End of Write = IS High or IWR High.
If Write Pulse ends before IACK Low, use specifications t
If Write Pulse ends after IACK Low, use specifications t
IKW
IWP
IDSU
IDH
IKHW
IACK Low Before Start of Write
Duration of Write
IAD15–0 Data Setup Before End of Write
IAD15–0 Data Hold After End of Write
Start of Write to IACK High
IAD15–0
IACK
1, 2
IWR
IS
IKSU
1
IDSU
, t
t
, t
IKH
Figure 33. IDMA Write, Short Write Cycle
IKW
IDH
Rev. A | Page 35 of 48 | August 2006
.
.
2, 3, 4
2, 3, 4
t
IWP
t
t
IKHW
IDSU
DATA
t
IDH
Min
0
10
3
2
Max
10
ADSP-218xN
Unit
ns
ns
ns
ns
ns