ADMC328TN AD [Analog Devices], ADMC328TN Datasheet - Page 4

• Manufacturer Part Number: ADMC328TN
• Description: 28-Lead ROM-Based DSP Motor Controller with Current Sense
• Manufacturer: AD [Analog Devices]

ADMC328
TIMING PARAMETERS
Parameter
Clock Signals
Signal t
frequency equal to half the instruction rate; a 10 MHz input clock (which is
equivalent to 100 ns) yields a 50 ns processor cycle (equivalent to 20 MHz). When
t
all relevant timing parameters to obtain specification value.
Example: t
Timing Requirements:
t
t
t
Switching Characteristics:
t
t
t
Control Signals
Timing Requirement:
t
PWM Shutdown Signals
Timing Requirement:
t
NOTES
1
Specifications subject to change without notice.
Applies after power-up sequence is complete.
CK
CKIN
CKIL
CKIH
CKL
CKH
CKOH
RSP
PWMTPW
values are within the range of 0.5 t
CK
CKH
is defined as 0.5 t
CLKIN Period
CLKIN Width Low
CLKIN Width High
CLKOUT Width Low
CLKOUT Width High
CLKIN High to CLKOUT High
RESET Width Low
PWMTRIP Width Low
= 0.5 t
CK
– 10 ns = 0.5 (50 ns) – 10 ns = 15 ns.
CKIN
. The ADMC328 uses an input clock with a
CLKOUT
CLKIN
CKIN
period, they should be substituted for
Figure 1. Clock Signals
t
CKIL
–4–
t
CKL
t
CKIN
t
t
CKH
CKOH
t
CKIH
Min
20
0.5 t
0.5 t
0
5 t
t
100
20
CK
CK
CK
CK
1
– 10
– 10
Max
150
20
REV. B
Unit
ns
ns
ns
ns
ns
ns
ns
ns