参数资料
型号: P87C251SP16
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: HIGH-PERFORMANCE CHMOS MICROCONTROLLER
中文描述: 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 31/35页
文件大小: 186K
代理商: P87C251SP16
PRELIMINARY
31
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.4
AC Characteristics — Serial Port, Shift Register Mode
Figure 17. Serial Port Waveform — Shift Register Mode
5.5
External Clock Drive
Table 14. Serial Port Timing — Shift Register Mode
Parameter
Symbol
Min
Max
Units
T
XLXL
T
QVSH
T
XHQX
T
XHDX
T
XHDV
Serial Port Clock Cycle Time
12T
OSC
10T
OSC
– 133
2T
OSC
– 117
0
ns
Output Data Setup to Clock Rising Edge
ns
Output Data hold after Clock Rising Edge
ns
Input Data Hold after Clock Rising Edge
ns
Clock Rising Edge to Input Data Valid
10T
OSC
– 133
ns
Table 15. External Clock Drive
Parameter
Symbol
Min
Max
Units
1/T
CLCL
T
CHCX
T
CLCX
T
CLCH
T
CHCL
Oscillator Frequency (F
OSC
)
High Time
16
MHz
20
ns
Low Time
20
ns
Rise Time
10
ns
Fall Time
10
ns
Valid
Valid
Valid
Valid
Valid
Valid
Valid
Valid
RXD
(In)
RXD
(Out)
TXD
0
1
2
3
4
5
6
7
TQVXH
TXLXL
TXHDX
TXHQX
TXHDV
A2592-02
Set TI
Set RI
TAV
TI and RI are set during S1P1 of the peripheral cycle following the shift of the eighth bit.
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