ADSP-21261SKBC-150 Analog Devices Inc, ADSP-21261SKBC-150 Datasheet - Page 28

• Manufacturer Part Number: ADSP-21261SKBC-150
• Description: 150 MHz, 32Bit DSP Processor.
• Manufacturer: Analog Devices Inc
• Series: SHARC®r
• Type: Fixed/Floating Pointr

Specifications of ADSP-21261SKBC-150

• Interface: DAI, SPI
• Clock Rate: 150MHz
• Non-volatile Memory: ROM (384 kB)
• On-chip Ram: 128kB
• Voltage - I/o: 3.30V
• Voltage - Core: 1.20V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 136-CSPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ADSP-21261
Table 22. 16-Bit Memory Write Cycle
1
Parameter
Switching Characteristics
t
t
t
t
t
t
t
t
D = (data cycle duration) × t
H = t
On reset, ALE is an active high cycle. However, it can be reconfigured by software to be active low.
ALEW
ALERW
ADAS
ADAH
WW
ALEH
DWS
DWH
CCLK
(if a hold cycle is specified, else H = 0)
ALE Pulse Width
ALE Deasserted to Read/Write Asserted
Address/Data 15–0 Setup Before ALE Deasserted
Address/Data15–0 Hold After ALE Deasserted
WR Pulse Width
ALE Deasserted
Address/Data15–0 Setup Before WR High
Address/Data15–0 Hold After WR High
AD15–0
ALE
WR
RD
CCLK
1
to Address/Data15–0 in High Z
VALID ADDRESS
t
ADAS
t
ALEW
Figure 20. 16-Bit Memory Write Cycle
Rev. 0 | Page 28 of 44 | March 2006
t
ADAH
t
ALEH
t
ALERW
1
1
t
t
DWS
WW
VALID DATA
Min
2 × t
1 × t
2.5 × t
0.5 × t
D – 2
0.5 × t
D
0.5 × t
CCLK
CCLK
CCLK
CCLK
CCLK
CCLK
– 2
– 0.5
t
DWH
– 2.0
– 0.8
– 0.8
– 1.5 + H
Max
0.5t
CCLK
+ 2.0
Unit
ns
ns
ns
ns
ns
ns
ns
ns