参数资料
型号: MC68711D3CFBE2
厂商: Freescale Semiconductor
文件页数: 17/124页
文件大小: 0K
描述: IC MCU 8BIT 44-QFP
标准包装: 96
系列: HC11
核心处理器: HC11
芯体尺寸: 8-位
速度: 2MHz
连通性: SCI,SPI
外围设备: POR,WDT
输入/输出数: 26
程序存储器容量: 4KB(4K x 8)
程序存储器类型: OTP
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-QFP
包装: 托盘
ELECTRICAL CHARACTERISTICS
TECHNICAL DATA
A-9
NOTES:
1. Input clocks with duty cycles other than 50% affect bus performance. Timing parameters affected by input clock
duty cycle are identified by (a) and (b). To recalculate the approximate bus timing values, substitute the following
expressions in place of 1/8 tcyc in the above formulas, where applicable:
(a) (1-DC)
× 1/4 t
cyc
(b) DC
× 1/4 t
cyc
Where:
DC is the decimal value of duty cycle percentage (high time).
2. All timing is shown with respect to 20% VDD and 70% VDD, unless otherwise noted.
Table A-6 Expansion Bus Timing
Num
Characteristic
Symbol
1.0 MHz
2.0 MHz
3.0 MHz
Unit
Min
Max
Min
Max
Min
Max
Frequency of Operation (E-Clock
Frequency)
fo
dc
1.0
dc
2.0
dc
3.0
MHz
1
Cycle Time
tcyc
1000
500
333
ns
2
Pulse Width, E Low
PWEL = 1/2 tcyc - 23ns
PWEL
477
227
146
ns
3
Pulse Width, E High
PWEH = 1/2 tcyc - 28 ns
PWEH
472
222
141
ns
4A
4B
E and AS Rise Time
E and AS Fall Time
tr
tf
20
20
20
15
ns
9
Address Hold Time
tAH = 1/8 tcyc - 29.5 ns
(Note 1a)
tAH
95.5
33
26
ns
12
Non-Muxed Address Valid Time to E Rise
tAV = PWEL - (tASD + 80 ns)
(Note 1a)
tAV
281.5
94
54
ns
17
Read Data Setup Time
tDSR
30
30
30
ns
18
Read Data Hold Time (Max = tMAD)tDHR
0
145.5
0
83
0
51
ns
19
Write Data Delay Time
tDDW = 1/8 tcyc + 65.5 ns
(Note 1a)
tDDW
190.5
128
71
ns
21
Write Data Hold Time
tDHW = 1/8 tcyc - 30 ns
(Note 1a)
tDHW
95.5
33
26
ns
22
Muxed Address Valid Time to E Rise
tAVM = PWEL - (tASD + 90 ns) (Note 1a)
tAVM
271.5
84
54
ns
24
Muxed Address Valid Time to AS Fall
tASL = PWASH - 70 ns
tASL
151
26
13
ns
25
Muxed Address Hold Time
tAHL = 1/8 tcyc - 30 ns
(Note 1b)
tAHL
95.5
33
31
ns
26
Delay Time, E to AS Rise
tASD = 1/8 tcyc - 5 ns
(Note 1a)
tASD
115.5
53
31
ns
27
Pulse Width, AS High
PWASH = 1/4 tcyc - 30 ns
PWASH
221
96
63
ns
28
Delay Time, AS to E Rise
tASED = 1/8 tcyc - 5 ns
(Note 1b)
tASED
115.5
53
31
ns
29
MPU Address Access Time
(Note 1a)
tACCA = tcyc – (PWEL– tAVM) – tDSR–tf
tACCA
744.5
307
196
ns
35
MPU Access Time
tACCE = PWEH - tDSR
tACCE
442
192
111
ns
36
Muxed Address Delay
(Previous Cycle MPU Read)
tMAD = tASD + 30 ns(Note 1a)
tMAD
145.5
83
51
ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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