參數(shù)資料
型號： KSZ8863FLL-EVAL
廠商： Micrel Inc
文件頁數(shù)： 94/106頁
文件大小： 0K
描述： BOARD EVALUATION FOR KSZ8863FLL
標準包裝： 1
主要目的： 接口，以太網(wǎng) PHY
嵌入式： 否
已用 IC / 零件： KSZ8863FLL
已供物品： 板
相關產(chǎn)品： 576-3750-ND - IC ETHERNET SWITCH 3PORT 48-LQFP
576-3576-ND - IC ETHERNET SW 3PORT 48-LQFP
其它名稱： 576-3866
PIC16C72 Series
1998 Microchip Technology Inc.
Preliminary
DS39016A-page 87
FIGURE 13-6: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
TABLE 13-6
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ Max Units
Conditions
40*
Tt0H
T0CKI High Pulse Width
No Prescaler
0.5TCY + 20
—
ns
Must also meet
parameter 42
With Prescaler
10
—
ns
41*
Tt0L
T0CKI Low Pulse Width
No Prescaler
0.5TCY + 20
—
ns
Must also meet
parameter 42
With Prescaler
10
—
ns
42*
Tt0P
T0CKI Period
No Prescaler
TCY + 40
—
ns
With Prescaler
Greater of:
20 or TCY + 40
N
—
ns
N = prescale value
(2, 4, ..., 256)
45*
Tt1H
T1CKI High Time Synchronous, Prescaler = 1
0.5TCY + 20
—
ns
Must also meet
parameter 47
Synchronous,
Prescaler =
2,4,8
PIC16C7X/CR72
15
—
ns
PIC16LC7X/LCR72
25
—
ns
Asynchronous PIC16C7X/CR72
30
—
ns
PIC16LC7X/LCR72
50
—
ns
46*
Tt1L
T1CKI Low Time Synchronous, Prescaler = 1
0.5TCY + 20
—
ns
Must also meet
parameter 47
Synchronous,
Prescaler =
2,4,8
PIC16C7X/CR72
15
—
ns
PIC16LC7X/LCR72
25
—
ns
Asynchronous PIC16C7X/CR72
30
—
ns
PIC16LC7X/LCR72
50
—
ns
47*
Tt1P
T1CKI input
period
Synchronous
PIC16C7X/CR72
Greater of:
30 OR TCY + 40
N
—
ns
N = prescale value
(1, 2, 4, 8)
PIC16LC7X/LCR72
Greater of:
50 OR TCY + 40
N
N = prescale value
(1, 2, 4, 8)
Asynchronous PIC16C7X/CR72
60
—
ns
PIC16LC7X/LCR72
100
—
ns
Ft1
Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN)
DC
—
200
kHz
48
TCKEZtmr1 Delay from external clock edge to timer increment
2Tosc
—
7Tosc
—
*
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note: Refer to Figure 13-1 for load conditions.
46
47
45
48
41
42
40
RA4/T0CKI
RC0/T1OSO/T1CKI
TMR0 or
TMR1
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