Microchip Technology MA330025-1 Data Sheet
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
DS70616G-page 518
2009-2012 Microchip Technology Inc.
FIGURE 32-6:
TIMER1-TIMER9 EXTERNAL CLOCK TIMING CHARACTERISTICS
Note: Refer to
Tx11
Tx15
Tx10
Tx20
TMRx
OS60
TxCK
TABLE 32-23: 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.
Symbol
Characteristic
(
)
Min.
Typ.
Max.
Units
Conditions
TA10
T
TX
H
TxCK High
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter
Parameter
N = prescaler value
(1, 8, 64, 256)
(1, 8, 64, 256)
Asynchronous
35
—
—
ns
TA11
T
TX
L
TxCK Low
Time
Time
Synchronous
mode
mode
Greater of:
20 or
(T
CY
+ 20)/N
—
—
ns
Must also meet
Parameter
Parameter
N = prescaler value
(1, 8, 64, 256)
(1, 8, 64, 256)
Asynchronous
10
—
—
ns
TA15
T
TX
P
TxCK 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
SOSC1/T1CK Oscillator
Input Frequency Range
(oscillator enabled by setting
bit, TCS (T1CON<1>))
Input Frequency Range
(oscillator enabled by setting
bit, TCS (T1CON<1>))
DC
—
50
kHz
TA20
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: Timer1 is a Type A.
2: These parameters are characterized, but are not tested in manufacturing.