Datasheet

 2006-2014 Microchip Technology Inc. DS70000178D-page 249
dsPIC30F1010/202X
FIGURE 21-6: TIMERx EXTERNAL CLOCK TIMING CHARACTERISTICS
TABLE 21-20: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.3V and 5.0V (±10%)
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  T
A  +125°C for Extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
TA10 T
TXH T1CK 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 T1CK Low Time Synchronous,
no prescaler
0.5 TCY + 20 — — ns Must also meet
Parameter TA15
Synchronous,
with prescaler
10 — — ns
Asynchronous 10 — — ns
TA15 TTXP T1CK 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 T1CK Clock
Edge to Timer Increment
0.5 TCY —1.5 TCY —
Tx11
Tx15
Tx10
Tx20
TMRx
OS60
TxCK
Note: “x” refers to Timer Type A or Timer Type B.
Refer to Figure 21-1 for load conditions.