Datasheet

dsPIC30F3010/3011
DS70141F-page 186 © 2010 Microchip Technology Inc.
FIGURE 23-7: TIMER1, 2, 3, 4 AND 5 EXTERNAL CLOCK TIMING CHARACTERISTICS
Note: Refer to Figure 23-2 for load conditions.
Tx11
Tx15
Tx10
Tx20
TMRX
OS60
TxCK
TABLE 23-22: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TA10 T
TXH TxCK High Time Synchronous,
no prescaler
0.5 TCY + 20 — — ns Must also meet
parameter TA15
Synchronous,
with prescaler
10 — — ns
Asynchronous 10 — — ns
TA11 T
TXL TxCK Low Time Synchronous,
no prescaler
0.5 TCY + 20 — — ns Must also meet
parameter TA15
Synchronous,
with prescaler
10 — — ns
Asynchronous 10 — — ns
TA15 T
TXP TxCK Input Period Synchronous,
no prescaler
TCY + 10 — — ns
Synchronous,
with prescaler
Greater of:
20 ns or
(T
CY + 40)/N
— — — N = prescale value
(1, 8, 64, 256)
Asynchronous 20 — — ns
OS60 Ft1 SOSC1/T1CK Oscillator 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
0.5 TCY 1.5
T
CY
—