Microchip Technology MA330016 Data Sheet

Page of 300
© 2007-2011 Microchip Technology Inc.
DS70290J-page 227
dsPIC33FJ32GP202/204 and dsPIC33FJ16GP304
      
 
 
TABLE 22-23: TIMER2 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
-40°C
≤ T
A
 
≤ +85°C for Industrial
-40°C
≤T
A
 
≤+125°C for Extended 
Param
No.
Symbol
Characteristic
(1)
Min
Typ
Max
Units
Conditions
TB10
TtxH
TxCK High 
Time
Synchronous 
mode
Greater of:
20 or
(T
CY
 + 20)/N
ns
Must also meet 
parameter TB15 
N = prescale        
value
(1, 8, 64, 256)
TB11
TtxL
TxCK Low 
Time
Synchronous 
mode
Greater of:
20 or
(T
CY
 + 20)/N
ns
Must also meet 
parameter TB15 
N = prescale        
value
(1, 8, 64, 256)
TB15
TtxP
TxCK 
Input 
Period
Synchronous 
mode
Greater of:
40 or
(2 T
CY
 + 40)/N
ns
N = prescale        
value
(1, 8, 64, 256)
TB20
T
CKEXTMRL
Delay from External TxCK 
Clock Edge to Timer 
Increment
0.75 T
CY
 + 40
1.75 T
CY
 + 40
ns
Note 1: These parameters are characterized, but are not tested in manufacturing.
TABLE 22-24: TIMER3 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
-40°C
≤ T
A
 
≤ +85°C for Industrial
-40°C
≤T
A
 
≤+125°C for Extended
Param
No.
Symbol
Characteristic
(1)
Min
Typ
Max
Units
Conditions
TC10
TtxH
TxCK High 
Time
Synchronous
T
CY
 + 20
ns
Must also meet 
parameter TC15
TC11
TtxL
TxCK Low 
Time
Synchronous
T
CY
 + 20
ns
Must also meet 
parameter TC15
TC15
TtxP
TxCK Input 
Period
Synchronous,
with prescaler
2 T
CY
 + 40
ns
N = prescale
value 
(1, 8, 64, 256)
TC20
T
CKEXTMRL
Delay from External TxCK 
Clock Edge to Timer Incre-
ment
0.75 T
CY
 + 40
1.75 T
CY
 + 40
ns
Note 1: These parameters are characterized, but are not tested in manufacturing.