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参数资料
| 型号： | HPC167064EL |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | High-Performance microController with a 16k UV Erasable CMOS EPROM |
| 中文描述： | 高性能的16K的紫外线可擦除的CMOS存储器微控制器 |
| 文件页数： | 23/34页 |
| 文件大小： | 415K |
| 代理商： | HPC167064EL |
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20 MHz
AC Electrical Characteristics
(See Notes 1 and 4 and
Figures 1 thru 5 ) VCC e 5V g5% TA eb55 Cto a125 C for HPC167064 and VCC e 5V g10%
TA e 0 Cto a70 C for HPC467064
Symbol and Formula
Parameter
Min
Max
Units
Notes
fC
CKI Operating Frequency
2
20
MHz
tC1 e 1fC
CKI Clock Period
50
500
ns
tCKIH
CKI High Time
225
ns
tCKIL
CKI Low Time
225
ns
tC e 2fC
CPU Timing Cycle
100
ns
tWAIT e tC
CPU Wait State Period
100
ns
tDC1C2R
Delay of CK2 Rising Edge after CKI Falling Edge
0
55
ns
(Note 2)
tDC1C2F
Delay of CK2 Falling Edge after CKI Falling Edge
0
55
ns
(Note 2)
fU e fC 8
External UART Clock Input Frequency
25
MHz
fMW
External MICROWIREPLUS Clock Input Frequency
125
MHz
fXIN e fC 22
External Timer Input Frequency
091
MHz
tXIN e tC
Pulse Width for Timer Inputs
100
ns
tUWS
MICROWIRE Setup TimeMaster
100
ns
MICROWIRE Setup TimeSlave
20
tUWH
MICROWIRE Hold TimeMaster
20
ns
MICROWIRE Hold TimeSlave
50
tUWV
MICROWIRE Output Valid TimeMaster
50
ns
MICROWIRE Output Valid TimeSlave
150
tSALE e
tC a 40
HLD Falling Edge before ALE Rising Edge
115
ns
tHWP e tC a 10
HLD Pulse Width
110
ns
tHAE e tC a 100
HLDA Falling Edge after HLD Falling Edge
200
ns
(Note 3)
tHAD e
tC a 85
HLDA Rising Edge after HLD Rising Edge
160
ns
tBF e
tC a 66
Bus Float after HLDA Falling Edge
116
ns
(Note 5)
tBE e
tCa 66
Bus Enable after HLDA Rising Edge
116
ns
(Note 5)
tUAS
Address Setup Time to Falling Edge of URD
10
ns
tUAH
Address Hold Time from Rising Edge of URD
10
ns
tRPW
URD Pulse Width
100
ns
tOE
URD Falling Edge to Output Data Valid
0
60
ns
tOD
Rising Edge of URD to Output Data Invalid
5
45
ns
(Note 6)
tDRDY
RDRDY Delay from Rising Edge of URD
70
ns
tWDW
UWR Pulse Width
40
ns
tUDS
Input Data Valid before Rising Edge of UWR
10
ns
tUDH (HPC467064)
Input Data Hold after Rising Edge of UWR
20
ns
tUDH (HPC167064)
25
ns
tA
WRRDY Delay from Rising Edge of UWR
70
ns
Clocks
Timers
MicrowirePlus
External
Hold
UPI
Timing
See NORMAL RUNNING MODE
This maximum frequency is attainable provided that this external baud clock has a duty cycle such that the high period includes two (2) falling edges of the CK2
clock
Note
CL e 40 pF
Note 1
These AC Characteristics are guaranteed with external clock drive on CKI having 50% duty cycle and with less than 15 pF load on CKO with rise and fall
times (tCKIR and tCKIL) on CKI input less than 25 ns
Note 2
Do not design with this parameter unless CKI is driven with an active signal When using a passive crystal circuit its stability is not guaranteed if either CKI
or CKO is connected to any external logic other than the passive components of the crystal circuit
Note 3
tHAE is spec’d for case with HLD falling edge occurring at the latest time can be accepted during the present CPU cycle being executed If HLD falling edge
occurs later tHAE may be as long as (3tC a 4WS a 72tC a 100) depending on the following CPU instruction cycles its wait states and ready input
Note 4
WS e tWAIT c (number of pre-programmed wait states) Minimum and maximum values are calculated at maximum operating frequency tc e 2000 MHz
with one wait state programmed
Note 5
Due to emulation restrictionsactual limits will be better
Note 6
Due to tester limitationsactual limits will be better
3
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