ADMCF340BST Analog Devices Inc, ADMCF340BST Datasheet - Page 4

• Manufacturer Part Number: ADMCF340BST
• Manufacturer: Analog Devices Inc

Specifications of ADMCF340BST

• Device Core Size: 16b
• Format: Fixed Point
• Clock Freq (max): 20MHz
• Mips: 20
• Device Input Clock Speed: 20MHz
• Ram Size: 1KB
• Program Memory Size: 12KB
• Operating Supply Voltage (typ): 2.5V
• Operating Supply Voltage (min): 2.44V
• Operating Supply Voltage (max): 2.55V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: LQFP
• Lead Free Status / Rohs Status: Not Compliant

ADMC(F)340
TIMING PARAMETERS
Parameter
Clock Signals
Signal T
a 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
substituted for all relevant timing parameters to obtain specification value as
in the following example:
Timing Requirements:
Switching Characteristics:
Control Signals
PWM Shutdown Signals
*Applies after power-up sequence is complete.
Specifications subject to change without notice.
t
t
t
t
t
t
Timing Requirement:
Timing Requirement:
CKIN
CKIL
CKIH
CKL
CKH
CKOH
t
t
t
RSP
PWMTPW
CKH
CK
CK
=
values are within the range of 0.5 t
is defined as 0.5 t
0 5
.
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
T
CK
−
10
ns
=
CKIN
0 5 50
.
. The ADMC(F)340 uses an input clock with
×
CLKOUT
CLKIN
ns
−
10
CKIN
ns
=
period, they should be
15
Figure 1. Clock Signals
ns
t
CKIL
–4–
t
CKL
t
CKIN
t
t
CKH
CKOH
Min
100
20
20
0.5 T
0.5 T
0
5 T
T
t
CKIH
CK
CK
CK
CK
*
– 10
– 10
Max
150
20
Unit
ns
ns
ns
ns
ns
ns
ns
ns
REV. A