ADSP-2105BP-80 Analog Devices Inc, ADSP-2105BP-80 Datasheet - Page 49

• Manufacturer Part Number: ADSP-2105BP-80
• Description: IC,DSP,16-BIT,CMOS,LDCC,68PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2105BP-80

• Rohs Status: RoHS non-compliant
• Interface: Synchronous Serial Port (SSP)
• Clock Rate: 20MHz
• Non-volatile Memory: External
• On-chip Ram: 3kB
• Voltage - I/o: 5.00V
• Voltage - Core: 5.00V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Package: 68PLCC
• Numeric And Arithmetic Format: Fixed-Point
• Maximum Speed: 20 MHz
• Ram Size: 1.5 KB
• Device Million Instructions Per Second: 20 MIPS

REV. B
TIMING PARAMETERS (ADSP-2103/2162/2164)
MEMORY WRITE
Parameter
Switching Characteristic:
t
t
t
t
t
t
t
t
t
t
w = wait states
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
Data Setup before WR High
Data Hold after WR High
WR Pulse Width
WR Low to Data Enabled
A0–A13, DMS, PMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, DMS, PMS, Setup before WR Deasserted
A0–A13, DMS, PMS Hold After WR Deasserted
WR High to RD or WR Low
t
CK.
DMS, PMS
A0 – A13
CLKOUT
WR
RD
D
Figure 43. Memory Write
t
CWR
t
ASW
–49–
t
WDE
t
10.24 MHz
Min
38.8
14.4
43.8
0
12.4
14.4
19.4
58.2
14.4
38.8
AW
t
WP
t
DW
Max
34.4
t
WRA
t
DH
t
WWR
Frequency
Dependency
Min
0.5t
0.25t
0.5t
0.25t
0.25t
0.25t
0.75t
0.25t
0.5t
CK
CK
CK
t
CK
CK
CK
CK
CK
CK
DDR
– 10 + w
– 5 + w
– 10
– 10
– 12
– 5
– 15 + w
– 10
– 10
Max
0.25t
ADSP-21xx
CK
+ 10
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns