Microchip Technology MA330028 Data Sheet
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 418
2011-2013 Microchip Technology Inc.
FIGURE 30-5:
TIMER1-TIMER5 EXTERNAL CLOCK TIMING CHARACTERISTICS
Note:
Refer to
for load conditions.
TMRx
OS60
TxCK
Tx10
Tx11
Tx15
Tx20
TABLE 30-23: TIMER1 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
TA10
T
TX
H
T1CK High
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter TA15,
N = prescaler value
(1, 8, 64, 256)
Parameter TA15,
N = prescaler value
(1, 8, 64, 256)
Asynchronous
35
—
—
ns
TA11
T
TX
L
T1CK Low
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter TA15,
N = prescaler value
(1, 8, 64, 256)
Parameter TA15,
N = prescaler value
(1, 8, 64, 256)
Asynchronous
10
—
—
ns
TA15
T
TX
P
T1CK Input
Period
Period
Synchronous
mode
mode
Greater of:
40 or
(2 T
CY
+ 40)/N
—
—
ns
N = prescale value
(1, 8, 64, 256)
(1, 8, 64, 256)
OS60
Ft1
T1CK Oscillator Input
Frequency Range (oscillator
enabled by setting bit, TCS
(T1CON<1>))
Frequency Range (oscillator
enabled by setting bit, TCS
(T1CON<1>))
DC
—
50
kHz
TA20
T
CKEXTMRL
Delay from External T1CK
Clock Edge to Timer
Increment
Clock Edge to Timer
Increment
0.75 T
CY
+ 40
—
1.75 T
CY
+ 40
ns
Note 1:
Timer1 is a Type A.
2:
These parameters are characterized, but are not tested in manufacturing.