ADSP-21991BST Analog Devices Inc, ADSP-21991BST Datasheet - Page 25

• 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

Timer PWM_OUT Cycle Timing
Table 7
input signal is asynchronous in “width capture mode” and has
an absolute maximum input frequency of 40 MHz.
Table 7. Timer PWM_OUT Cycle Timing
1
REV. 0
Parameter
Switching Characteristic
t
The minimum time for t
HTO
and
PWM_OUT
Figure 8
HCLK
Timer Pulsewidth Output
describe timer expired operations. The
HTO
is one cycle, and the maximum time for t
Figure 8. Timer PWM_OUT Cycle Timing
1
HTO
–25–
equals (2
32
–1) cycles.
t
HTO
Min
12.5
Max
(2
ADSP-21991
32
–1) cycles
Unit
ns