Datasheet

dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
DS70591E-page 418  2009-2012 Microchip Technology Inc.
TABLE 28-6: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
(1)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
MTA10 T
TXH T1CK High
Time
Synchronous,
no prescaler
TCY + 15 — — ns Must also meet
Parameter TA15,
N = prescale value
(1, 8, 64, 256)
Synchronous,
with prescaler
(T
CY + 15)/N — — ns
Asynchronous 15 — — ns
MTA11 T
TXL T1CK Low
Time
Synchronous,
no prescaler
(TCY + 15) — — ns Must also meet
Parameter TA15,
N = prescale value
(1, 8, 64, 256)
Synchronous,
with prescaler
(TCY + 20)/N — — ns
Asynchronous 15 — — ns
MTA15 T
TXP T1CK Input
Period
Synchronous,
no prescaler
2 TCY + 30 — — ns
Synchronous,
with prescaler
Greater of:
40 ns or
(2 TCY + 30)/N
— — — N = prescale value
(1, 8, 64, 256)
Asynchronous 30 — — ns
MOS60 Ft1 SOSCI/T1CK Oscillator
Input Frequency Range
(oscillator is enabled by
setting bit, TCS
(T1CON<1>))
DC — 50 kHz
MTA20 T
CKEXTMRL Delay from External T1CK
Clock Edge to Timer
Increment
0.75 TCY + 30 — 1.75 TCY + 30 —
Note 1: Timer1 is a Type A.