Microchip Technology MA330031-2 Data Sheet
2011-2013 Microchip Technology Inc.
DS70000657H-page 419
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
TABLE 30-24: TIMER2 AND TIMER4 (TYPE B TIMER) EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(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
(
)
Min.
Typ.
Max.
Units
Conditions
TB10
TtxH
TxCK High
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter TB15,
N = prescale
value
(1, 8, 64, 256)
Parameter TB15,
N = prescale
value
(1, 8, 64, 256)
TB11
TtxL
TxCK Low
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter TB15,
N = prescale
value
(1, 8, 64, 256)
Parameter TB15,
N = prescale
value
(1, 8, 64, 256)
TB15
TtxP
TxCK
Input
Period
Input
Period
Synchronous
mode
mode
Greater of:
40 or
(2 T
CY
+ 40)/N
—
—
ns
N = prescale
value
(1, 8, 64, 256)
value
(1, 8, 64, 256)
TB20
T
CKEXTMRL
Delay from External TxCK
Clock Edge to Timer
Increment
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 30-25: TIMER3 AND TIMER5 (TYPE C TIMER) EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(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
(
)
Min.
Typ.
Max.
Units
Conditions
TC10
TtxH
TxCK High
Time
Time
Synchronous
T
CY
+ 20
—
—
ns
Must also meet
Parameter TC15
Parameter TC15
TC11
TtxL
TxCK Low
Time
Time
Synchronous
T
CY
+ 20
—
—
ns
Must also meet
Parameter TC15
Parameter TC15
TC15
TtxP
TxCK Input
Period
Period
Synchronous,
with prescaler
with prescaler
2 T
CY
+ 40
—
—
ns
N = prescale
value
(1, 8, 64, 256)
value
(1, 8, 64, 256)
TC20
T
CKEXTMRL
Delay from External TxCK
Clock Edge to Timer
Increment
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.