参数资料
型号: ST10F168-Q2
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP144
封装: 28 X 28 MM, PLASTIC, QFP-144
文件页数: 62/76页
文件大小: 483K
代理商: ST10F168-Q2
ST10F168
65/76
20.5.11 - Demultiplexed Bus
VDD =5V ±10%, VSS = 0V, for Q6 version : TA = -40, +85°C and for Q2 version TA = -40, +125°C, CL =
100pF, ALE cycle time = 4 TCL + 2tA +tC +tF (80ns at 25MHz CPU clock without wait states), unless
otherwise specified.
Table 25 : Demultiplexed bus characteristics
Symbol
Parameter
Max. CPU Clock
25MHz
Variable CPU Clock
1/2 TCL = 1 to 25MHz
Unit
Min.
Max.
Min.
Max.
t5
CC ALE high time
10 + tA
TCL - 10+ tA
–ns
t6
CC Address setup to ALE
4 + tA
TCL - 16+ tA
–ns
t80 CC Address / Unlatched CS setup to RD, WR
(with RW-delay)
30 + 2tA
2TCL - 10 + 2tA
–ns
t81 CC Address / Unlatched CS setup to RD, WR
(no RW-delay)
10 + 2tA
TCL -10 + 2tA
–ns
t12 CC RD, WR low time (with RW-delay)
30 + tC
2TCL - 10 + tC
–ns
t13 CC RD, WR low time (no RW-delay)
50 + tC
3TCL - 10 + tC
–ns
t14 SR RD to valid data in (with RW-delay)
20 + tC
–2TCL - 20 + tC
ns
t15 SR RD to valid data in (no RW-delay)
40 + tC
–3TCL - 20 + tC
ns
t16 SR ALE low to valid data in
40 + tA +tC
3TCL - 20
+tA +tC
ns
t17 SR Address / Unlatched CS to valid data in
50 + 2tA +tC
4TCL - 30
+2tA +tC
ns
t18 SR Data hold after RD rising edge
0
0
ns
t20 SR Data float after RD rising edge
(with RW-delay)12
–26 + tF
2TCL - 14
+tF +2tA
1
ns
t21 SR Data float after RD rising edge
(no RW-delay)12
–10 + tF
–TCL - 10
+tF +2tA
1
ns
t22 CC Data valid to WR
20 + tC
2TCL- 20 + tC
–ns
t24 CC Data hold after WR
10 + tF
–TCL - 10+ tF
–ns
t26 CC ALE rising edge after RD, WR
-10 + tF
–-10 + tF
–ns
t28 CC Address / Unlatched CS hold after RD, WR 3 0 (no tF)
-5 + tF
(tF >0)
0 (no tF)
-5 + tF (tF >0)
–ns
t28h CC Address / Unlatched CS hold after WRH
-5 + tF
–-5 + tF
–ns
t38 CC ALE falling edge to Latched CS
-4 - tA
10 - tA
-4 - tA
10 - tA
ns
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