TS68230 データシートの表示（PDF） - STMicroelectronics
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TS68230 Datasheet PDF : 61 Pages
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TS68230
Table 1.2 : Signal Summary.
Signal Name
Input/Output
Active State
Edge/Level
Sensitive
Output States
CLK
Input
Falling and Rising
Edge
CS
Input
Low
Level
D0-D7
Input/output High = 1, Low = 0
Level
High, Low, High Impedance
DMAREQ
Output
Low
High, Low
DTACK
Output
Low
High, Low, High Impedance*
H1(H3)***
Input
Low or High
Asserted Edge
H2(H4)**
Input or Output
Low or High
Asserted Edge High, Low, High Impedance
PA0-PA7**, PB0-PB7**, Input/output, High = 1, Low = 0
PC0-PC7
Input or Output
Level
High, Low, High Impedance
PIACK
Input
Low
Level
PIRQ
Output
Low
Low, High Impedance*
RS1-RS5
Input
High = 1, Low = 0
Level
R/W
Input
High Read, Low Write
Level
RESET
Input
Low
Level
TIACK
Input
Low
Level
TIN (external clock)
Input
Rising Edge
TIN (run/halt)
Input
High
Level
TOUT (square wave)
Output
Low
High, Low
TOUT (TIRQ)
Output
Low
Low, High Impedance*
* Pullup resistors required.
** Note these pins have internal pullup resistors.
Figure 1.3 : Logical Pin Connection.
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