|
PIC16F1938 Datasheet, PDF (397/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers | |||
|
◁ |
PIC16(L)F1938/9
TABLE 30-4: CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ï£ï TA ï£ï +125°C
Param
No.
Sym.
Characteristic
Min.
Typâ
OS11 TosH2ckL FOSCï to CLKOUTï¯ (1)
â
â
OS12 TosH2ckH FOSCï to CLKOUTï (1)
â
â
OS13 TckL2ioV CLKOUTï¯ to Port out valid(1)
â
â
OS14 TioV2ckH Port input valid before CLKOUTï(1)
TOSC + 200 ns â
OS15 TosH2ioV Foscï (Q1 cycle) to Port out valid
â
50
OS16 TosH2ioI Foscï (Q2 cycle) to Port input invalid
(I/O in hold time)
50
â
OS17 TioV2osH Port input valid to Foscïï (Q2 cycle)
(I/O in setup time)
20
â
OS18 TioR
Port output rise time
â
40
â
15
OS19 TioF
Port output fall time
â
28
â
15
OS20* Tinp
INT pin input high or low time
25
â
OS21* Tioc
Interrupt-on-change new input level
time
25
â
* These parameters are characterized but not tested.
â Data in âTypâ column is at 3.0V, 25ï°C unless otherwise stated.
Note 1: Measurements are taken in RC mode where CLKOUT output is 4 x TOSC.
Max.
70
72
20
â
70*
â
â
72
32
55
30
â
â
Units Conditions
ns VDD = 3.3-5.0V
ns VDD = 3.3-5.0V
ns
ns
ns VDD = 3.3-5.0V
ns VDD = 3.3-5.0V
ns
ns VDD = 1.8V
VDD = 3.3-5.0V
ns VDD = 1.8V
VDD = 3.3-5.0V
ns
ns
FIGURE 30-8:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Start-Up Time
Internal Reset(1)
Watchdog Timer
Reset(1)
33
32
I/O pins
Note 1: Asserted low.
30
34
31
34
ï£ 2011 Microchip Technology Inc.
Preliminary
DS41574A-page 397
|
▷ |