Microchip Technology MA330025-1 Data Sheet
2009-2012 Microchip Technology Inc.
DS70616G-page 519
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
TABLE 32-24: TIMER2, TIMER4, TIMER6, TIMER8 (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.
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
Parameter
,
N = prescale
value (1, 8, 64, 256)
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
Parameter
,
N = prescale
value (1, 8, 64, 256)
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 32-25: TIMER3, TIMER5, TIMER7, TIMER9 (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.
Symbol
Characteristic
(
)
Min.
Typ.
Max.
Units
Conditions
TC10
TtxH
TxCK High
Time
Time
Synchronous
T
CY
+ 20
—
—
ns
Must also meet
Parameter
Parameter
TC11
TtxL
TxCK Low
Time
Time
Synchronous
T
CY
+ 20
—
—
ns
Must also meet
Parameter
Parameter
TC15
TtxP
TxCK Input
Period
Period
Synchronous,
with Prescaler
with Prescaler
2 T
CY
+ 40
—
—
ns
N = prescale value
(1, 8, 64, 256)
(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.