参数资料
型号: MB90487BPFV
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 120/124页
文件大小: 1547K
代理商: MB90487BPFV
MB90480B/485B Series
95
(5) Bus Read Timing
(VCC
= 2.7 V to 3.6 V, VSS = 0.0 V, TA = 0 °C to +70 °C)
* : tCP is internal operating clock cycle time. Refer to “ (1) Clock Timing”.
Parameter
Symbol
Pin name
Conditions
Value
Unit
Remarks
Min
Max
ALE pulse width
tLHLL
ALE
tCP*
/ 2 15
ns
16 MHz < fCP
25 MHz
tCP*
/ 2 20
ns
8 MHz < fCP
16 MHz
tCP*
/ 2 35
ns
fCP
≤ 8 MHz
Valid address
ALE
↓time
tAVLL
Address,
ALE
tCP*
/ 2 17
ns
tCP*
/ 2 40
ns
fCP
≤ 8 MHz
ALE
↓→
address valid time
tLLAX
ALE,
Address
tCP*
/ 2 15
ns
Valid address
RD
↓time
tAVRL
RD,
Address
tCP*
25
ns
Valid address
valid data input
tAVDV
Address,
Data
5 tCP*
/ 2 55
ns
5 tCP*
/ 2 80
ns
fCP
≤ 8 MHz
RD pulse width
tRLRH
RD
3 tCP*
/ 2 25
ns
16 MHz < fCP
25 MHz
3 tCP*
/ 2 20
ns
8 MHz < fCP
16 MHz
RD
↓→
valid data input
tRLDV
RD,
Data
3 tCP*
/ 2 55
ns
3 tCP*
/ 2 80
ns
fCP
≤ 8 MHz
RD
↑→data hold time
tRHDX
RD,
Data
0
ns
RD
↑→ALE↑time
tRHLH
RD, ALE
tCP*
/ 2 15
ns
RD
↑→
address valid time
tRHAX
Address,
RD
tCP*
/ 2 10
ns
Valid address
CLK
↑time
tAVCH
Address,
CLK
tCP*
/ 2 17
ns
RD
↓→CLK↑time
tRLCH
RD, CLK
tCP*
/ 2 17
ns
ALE
↓→RD↓time
tLLRL
RD, ALE
tCP*
/ 2 15
ns
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