ADSP-2105BP-80 Analog Devices Inc, ADSP-2105BP-80 Datasheet - Page 48

• 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

ADSP-21xx
TIMING PARAMETERS (ADSP-2103/2162/2164)
MEMORY READ
Parameter
Timing Requirement:
t
t
t
Switching Characteristic:
t
t
t
t
t
w = wait states
RDD
AA
RDH
RP
CRD
ASR
RDA
RWR
RD Low to Data Valid
A0–A13, PMS, DMS, BMS to Data Valid
Data Hold from RD High
RD Pulse Width
CLKOUT High to RD Low
A0–A13, PMS, DMS, BMS Setup before RD Low
A0–A13, PMS, DMS, BMS Hold after RD Deasserted
RD High to RD or WR Low
t
CK.
DMS, PMS
CLKOUT
A0 – A13
BMS
RD
WR
D
Figure 42. Memory Read
t
CRD
–48–
t
ASR
t
AA
10.24 MHz
Min
0
43.8
19.4
12.4
14.4
38.8
t
RDD
t
Max
33.8
49.2
34.4
RP
Frequency
Dependency
Min
0.5t
0.25t
0.25t
0.25t
0.5t
t
RDA
CK
CK
CK
CK
CK
t
RDH
– 5 + w
– 10
t
– 5
– 12
– 10
RWR
Max
0.5t
0.75t
0.25t
CK
CK
CK
– 15 + w
– 24 + w
+ 10
REV. B
Unit
ns
ns
ns
ns
ns
ns
ns
ns