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参数资料
| 型号： | P83C251SB16 |
| 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, MROM, 16 MHz, MICROCONTROLLER, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 19/35页 |
| 文件大小： | 186K |
| 代理商： | P83C251SB16 |
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PRELIMINARY
19
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.2
Definition of AC Symbols
5.3
A.C. Characteristics
Test Conditions: Capacitive load on all pins = 50 pF.
Table 10. AC Timing Symbol Definitions
Signals
Conditions
A
Address
H
High
D
Data In
L
Low
L
ALE
V
Valid
Q
Data Out
X
No Longer Valid
R
RD#/PSEN#
Z
Floating
W
WR#
Table 11 lists AC timing parameters for the
8XC251SA/SB/SP/SQ with no wait states. External
wait
states
can
be
PSEN#/RD#/WR# and/or by extending ALE. In the
table, Notes 3 and 5 mark parameters affected by an
added
by
extending
ALE wait state, and Notes 4 and 5 mark parameters
affected by a PSEN#/RD#/WR# wait state.
Figures 8–10 show the bus cycles with the timing
parameters.
Table 11. AC Characteristics
Symbol
Parameter
@ Max F
osc
(1)
Min
F
osc
Variable
Min
Units
Max
Max
F
OSC
T
OSC
XTAL1 Frequency
N/A
N/A
0
16
MHz
1/F
OSC
@ 12 MHz
@ 16 MHz
N/A
N/A
83.3
62.5
ns
T
LHLL
ALE Pulse Width
@ 12 MHz
@ 16 MHz
73.3
52.5
(1+2M)
T
OSC
– 10
ns
(3)
T
AVLL
Address Valid to ALE Low
@ 12 MHz
@ 16 MHz
58.3
37.5
(1+2M)
T
OSC
– 25
ns
(3)
T
LLAX
Address Hold after ALE Low
@ 12 MHz
@ 16 MHz
15
15
15
ns
NOTES:
1.
2.
3.
4.
5.
16 MHz.
Specifications for PSEN# are identical to those for RD#.
In the formula, M=Number of wait states (0 or 1) for ALE.
In the formula, N=Number of wait states (0,1,2, or 3) for RD#/PSEN#/WR#.
“Typical” specifications are untested and not guaranteed.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| P83C251SP16 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P83C251SQ16 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:HIGH-PERFORMANCE CHMOS MICROCONTROLLER |
| P83C251TB24 R OM | 制造商:Intel 功能描述: |
| P83C266 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
| P83C266BDR | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Microcontrollers for PAL/SECAM TV with OSD and VST |
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