ADSP-21991BST Analog Devices Inc, ADSP-21991BST Datasheet - Page 24

• Manufacturer Part Number: ADSP-21991BST
• Description: IC DSP CONTROLLER 16BIT 176LQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-21991BST

• Rohs Status: RoHS non-compliant
• Interface: SPI, SSP
• Clock Rate: 160MHz
• Non-volatile Memory: External
• On-chip Ram: 112kB
• Voltage - I/o: 3.30V
• Voltage - Core: 2.50V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 176-LQFP

ADSP-21991
Programmable Flags Cycle Timing
Table 6
Table 6. Programmable Flags Cycle Timing
Parameter
Timing Requirement
t
Switching Characteristics
t
t
HFI
DFO
HFO
and
Figure 7
(OUTPUT)
CLKOUT
(INPUT)
Flag Input Hold is Asynchronous
Flag Output Delay with Respect to CLKOUT
Flag Output Hold After CLKOUT High
PF
PF
describe Programmable Flag operations.
Figure 7. Programmable Flags Cycle Timing
t
DFO
–24–
FLAG INPUT
t
FLAG OUTPUT
HFI
t
HFO
Min
3
Max
7
6
ns
ns
REV. 0
Unit
ns