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: 71/76页
文件大小: 483K
代理商: ST10F168-Q2
ST10F168
73/76
20.5.13 - External Bus Arbitration
VDD =5V ± 10%, VSS = 0V, for Q6 version : TA = -40, +85°C and for Q2 version TA = -40, +125°C, CL =
100pF, unless otherwise specified.
Note
1. Partially tested, guaranted by design characterization.
Notes 1. The ST10F168 will complete the currently running bus cycle before granting bus access.
2. This is the first possibility for BREQ to become active.
3. The CS outputs will be resistive high (pullup) after
t
64.
Symbol
Parameter
Max. CPU Clock
25MHz
Variable CPU Clock
1/2 TCL = 1 to 25MHz
Unit
Min.
Max.
Min.
Max.
t61 SR HOLD input setup time to CLKOUT
20
20
ns
t62 CC CLKOUT to HLDA high or BREQ low delay
20
20
ns
t63 CC CLKOUT to HLDA low or BREQ high delay
20
20
ns
t64 CC CSx release 1
–20
20
ns
t65 CC CSx drive
-4
24
-4
24
ns
t66 CC Other signals release 1
–20
20
ns
t67 CC Other signals drive
-4
24
-4
24
ns
Figure 30 : External bus arbitration, releasing the bus
t61
t63
t66
1)
t64
1)
2)
t62
3)
CLKOUT
HOLD
HLDA
BREQ
Others
CSx
(P6.x)
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