Datasheet

© 2008-2012 Microchip Technology Inc. DS70318F-page 345
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
TABLE 26-7: TIMER2 EXTERNAL CLOCK TIMING REQUIREMENTS
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
(1)
Min Typ Max Units Conditions
MTB10 TtxH TxCK High
Time
Synchronous
mode
Greater of:
15 or
(T
CY + 15)/N
——ns
Must also meet
parameter TB15
N = prescale
value
(1, 8, 64, 256)
MTB11 TtxL TxCK Low
Time
Synchronous
mode
Greater of:
15 or
(T
CY + 15)/N
— — ns Must also meet
parameter TB15
N = prescale
value
(1, 8, 64, 256)
MTB15 TtxP TxCK
Input
Period
Synchronous
mode
Greater of:
40 or
(2 T
CY + 30)/N
— — ns N = prescale
value
(1, 8, 64, 256)
MTB20 TCKEXTMRL Delay from External TxCK
Clock Edge to Timer
Increment
0.75 TCY + 30 — 1.75 TCY + 30 ns —
Note 1: These parameters are characterized, but are not tested in manufacturing.
TABLE 26-8: TIMER3 EXTERNAL CLOCK TIMING REQUIREMENTS
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
(1)
Min Typ Max Units Conditions
MTC10 TtxH TxCK High
Time
Synchronous TCY + 10 — — ns Must also meet
parameter TC15
MTC11 TtxL TxCK Low
Time
Synchronous T
CY + 10 — — ns Must also meet
parameter TC15
MTC15 TtxP TxCK Input
Period
Synchronous,
with prescaler
2 TCY + 20 — — ns —
MTC20 T
CKEXTMRL Delay from External TxCK
Clock Edge to Timer
Increment
0.75 TCY + 20 — 1.75 TCY + 20 ns —
Note 1: These parameters are characterized, but are not tested in manufacturing.