参数资料
型号: MC68HC11A8BCFU2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
封装: QFP-64
文件页数: 50/158页
文件大小: 3803K
代理商: MC68HC11A8BCFU2
ELECTRICAL CHARACTERISTICS
MOTOROLA
TECHNICAL DATA
A-23
A
NOTES:
1. All timing is shown with respect to 20% VDD and 70% VDD, unless otherwise noted.
2. Signal production depends on software.
3. Assumes 200 pF load on all SPI pins.
Table A-8a Serial Peripheral Interface (SPI) Timing (MC68L11A8)
VDD = 3.0 Vdc to 5.5 Vdc, VSS = 0 Vdc, TA = TL to TH
Num
Characteristic
Symbol
1.0 MHz
2.0 MHz
Unit
Min
Max
Min
Max
Operating Frequency
Master
Slave
fop(m)
fop(s)
dc
0.5
1.0
dc
0.5
2.0
fop
MHz
1
Cycle Time
Master
Slave
tcyc(m)
tcyc(s)
2.0
1000
2.0
500
tcyc
ns
2
Enable Lead Time
Master
(Note 2)
Slave
tlead(m)
tlead(s)
500
250
ns
3
Enable Lag Time
Master
(Note 2)
Slave
tlag(m)
tlag(s)
500
250
ns
4
Clock (SCK) High Time
Master
Slave
tw(SCKH)m
tw(SCKH)s
680
380
340
190
ns
5
Clock (SCK) Low Time
Master
Slave
tw(SCKL)m
tw(SCKL)s
680
380
340
190
ns
6
Data Setup Time (Inputs)
Master
Slave
tsu(m)
tsu(s)
100
100
ns
7
Data Hold Time (Inputs)
Master
Slave
th(m)
th(s)
100
100
ns
8
Access Time (Time to Data Active from High-
Impedance State)
Slave
ta
0
120
0
120
ns
9
Disable Time (Hold Time to High-Impedance State)
Slave
tdis
240
240
ns
10
Data Valid (After Enable Edge)(Note 3)
tv(s)
240
240
ns
11
Data Hold Time (Outputs) (After Enable Edge)
tho
0—0—
ns
12
Rise Time (20% VDD to 70% VDD, CL = 200 pF)
SPI Outputs (SCK, MOSI, and MISO)
SPI Inputs (SCK, MOSI, MISO, and SS)
trm
trs
100
2.0
100
2.0
ns
s
13
Fall Time (70% VDD to 20% VDD, CL = 200 pF)
SPI Outputs (SCK, MOSI, and MISO)
SPI Inputs (SCK, MOSI, MISO, and SS)
tfm
tfs
100
2.0
100
2.0
ns
s
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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