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參數(shù)資料
| 型號： | PLC18V8ZIN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | PLD |
| 英文描述： | Delay On Break Timer |
| 中文描述： | OT PLD, 40 ns, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-146-1, DIP-20 |
| 文件頁數(shù)： | 7/23頁 |
| 文件大小： | 225K |
| 代理商： | PLC18V8ZIN |
Philips Semiconductors
Product specification
PLC18V8Z
Zero standby power
CMOS versatile PAL devices
1997 Aug 08
7
CONFIGURATION CELL
A single configuration cell controls the functions of Pins 1 and 11.
Refer to Functional Diagram. When the configuration cell is
programmed, Pin 1 is a dedicated clock and Pin 11 is dedicated for
output enable. When the configuration cell is unprogrammed, Pins 1
and 11 are both dedicated inputs. Note that the output enable for all
registered OMCs is common—from Pin 11 only. Output enable
control of the bidirectional I/O OMCs is provided from the AND array
via the direction product term.
If any one OMC is configured as registered, the configuration cell
will be automatically configured (via the design software) to ensure
that the clock and output enable functions are enabled on Pins 1
and 11, respectively. If none of the OMCs are registered, the
configuration cell will be programmed such that Pins 1 and 11 are
dedicated inputs. The programming codes are as follows:
Pin 1 = CLK, Pin 11 = OE
L
Pin 1 and Pin 11 = Input
H
CONTROL CELL CONFIGURATIONS
FUNCTION
AC1
1
AC2
N
CONFIG. CELL
COMMENTS
Registered mode
Programmed
Programmed
Programmed
Dedicated clock from Pin 1. OE Control
for all registerd OMCs from Pin 11 only.
Bidirectional I/O mode
1
Unprogrammed
Unprogrammed
Unprogrammed
Pins 1 and 11 are dedicated inputs.
3-State control from AND array only.
Fixed input mode
Unprogrammed
Programmed
Unprogrammed
Pins 1 and 11 are dedicated inputs.
Fixed output mode
Programmed
Unprogrammed
Unprogrammed
Pins 1 and 11 are dedicated inputs. The
feedback path (via F
MUX
) is disabled.
NOTE:
1. This is the virgin state as shipped from the factory.
ARCHITECTURE CONTROL—AC1 and AC2
I
CODE
D
OMC CONFIGURATION
REGISTERED (D–TYPE)
1
11
S
CLK
F(D), F (D)
Q
OE
S
F(B), F (B)
DIR
CODE
B
OMC CONFIGURATION
BIDIRECTIONAL I/O
1
(COMBINATORIAL)
CODE
O
OMC CONFIGURATION
FIXED OUTPUT
CODE
CONFIGURATION CELL
CODE
L
CONFIGURATION CELL
CODE
OMC CONFIGURATION
FIXED INPUT
PIN 1 = CLK
PIN 11 = OE
H
6
PIN 1 = INPUT
PIN 11 = INPUT
S
F(O), F (O)
F (I)
F(D), F (D)
11
1
CLKQ
OE
11
1
CLK
Q
OE
NC
SP
NC
SP
AR
SP
AR
AR
SP00015
NOTES:
A factory shipped unprogrammed device is configured such that:
1. This is the initial unprogrammed state. All cells are in a conductive state.
2. All AND gates are pulled to a logic “0” (Low).
3. Output polarity is inverting.
4. Pins 1 and 11 are configured as inputs 0 and 9. The clock and OE functions are disabled.
5. All Output Macro Cells (OMCs) are configured as bidirectional I/O, with the outputs disabled via the direction term.
6. This configuration cannot be used if any OMCs are configured as registered (Code = D).
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