INTEGRATED CIRCUITS
PLUS405-37/-45
Programmable logic sequencers
(16
×
64
×
8)
Product specification
IC13 Data Handbook
1996 Nov 12
Philips
Semiconductors
Philips Semiconductors
Product specification
Programmable logic sequencers
(16
×
64
×
8)
•
TTL compatible
•
J-K or S-R flip-flop functions
•
Automatic “Hold” states
•
3-State outputs
APPLICATIONS
PLUS405-37/-45
DESCRIPTION
The PLUS405 devices are bipolar, programmable state machines of
the Mealy type. Both the AND and the OR array are
user-programmable. All 64 AND gates are connected to the 16
external dedicated inputs (I0 - I15) and to the feedback paths of the
8 on-chip State Registers (Q
P0
- Q
P7
). Two complement arrays
support complex IF-THEN-ELSE state transitions with a single
product term (input variables C0, C1)
.
All state transition terms can include True, False and Don’t Care
states of the controlling state variables. All AND gates are merged
into the programmable OR array to issue the next-state and
next-output commands to their respective registers. Because the
OR array is programmable, any one or all of the 64 transition terms
can be connected to any or all of the State and Output Registers.
All state (Q
P0
- Q
P7
) and output (Q
F0
- Q
F7
) registers are
edge-triggered, clocked J-K flip-flops, with Asynchronous Preset and
Reset options. The PLUS405 architecture provides the added
flexibility of the J-K toggle function which is indeterminate on S-R
flip-flops. Each register may be individually programmed such that a
specific Preset-Reset pattern is initialized when the initialization pin
is raised to a logic level “1”. This feature allows the state machine to
be asynchronously initialized to known internal state and output
conditions, prior to proceeding through a sequence of state
transitions. Upon power-up, all registers are unconditionally preset
to “1”. If desired, the initialization input pin (INIT) can be converted to
an Output Enable (OE) function as an additional user-programmable
feature.
Availability of two user-programmable clocks allows the user to
design two independently clocked state machine functions
consisting of four state and four output bits each.
Order codes are listed in the Ordering Information Table.
•
Interface protocols
•
Sequence detectors
•
Peripheral controllers
•
Timing generators
•
Sequential circuits
•
Elevator contollers
•
Security locking systems
•
Counters
•
Shift registers
PIN CONFIGURATIONS
N Package
CLK 1
I7 2
I6 3
I5/CLK 4
I4 5
I3 6
28 V
CC
27 I8
26 I9
25 I10
24 I11
23 I12
22 I13
21 I14
20 I15
19 INIT/OE
18 F0
17 F1
16 F2
15 F3
FEATURES
I2 7
I1 8
I0 9
F7 10
F6 11
F5 12
F4 13
GND 14
N = Plastic DIP (600mil-wide)
•
PLUS405-37
–
f
MAX
= 37MHz
–
50MHz clock rate
•
PLUS405-45
–
f
MAX
= 45MHz
–
58.8MHz clock rate
•
Functional superset of PLS105/105A
•
Field-programmable (Ti-W fusible link)
•
16 input variables
•
8 output functions
•
64 transition terms
•
8-bit State Register
•
8-bit Output Register
•
2 transition Complement Arrays
•
Multiple clocks*
•
Programmable Asynchronous Initialization or Output Enable
•
Power-on preset of all registers to “1”
•
“On-chip” diagnostic test mode features for access to state and
•
950mW power dissipation (typ.)
1996 Nov 12
2
output registers
A Package
I5/CLK I6
4
I4 5
I3 6
I2 7
I1 8
I0 9
F7 10
F6 11
12
13
14
15
16
17
18
3
I7 CLK V
CC
I8
1 28 27
2
I9
26
25 I10
24 I11
23 I12
22 I13
21 I14
20 I15
19 INIT/OE
F5 F4 GND F3 F2 F1 F0
A = Plastic Leaded Chip Carrier
SP00251
853–1280 17500
Philips Semiconductors
Product specification
Programmable logic sequencers
(16
×
64
×
8)
PLUS405-37/-45
ORDERING INFORMATION
DESCRIPTION
28-Pin Plastic DIP (600mil-wide)
28-Pin Plastic DIP (600mil-wide)
28-Pin Plastic Leaded Chip Carrier
28-Pin Plastic Leaded Chip Carrier
OPERATING
FREQUENCY
45MHz (t
IS1
+ t
CKO1
)
37MHz (t
IS1
+ t
CKO1
)
45MHz (t
IS1
+ t
CKO1
)
37MHz (t
IS1
+ t
CKO1
)
ORDER CODE
PLUS405–45N
PLUS405–37N
PLUS405–45A
PLUS405–37A
DRAWING NUMBER
SOT117-2
SOT117-2
SOT261-3
SOT261-3
PIN DESCRIPTION
PIN NO.
1
SYMBOL
CLK1
NAME AND FUNCTION
Clock:
The Clock input to the State and Output Registers. A Low-to-High transition on this
line is necessary to update the contents of both state and output registers. Pin 1 only
clocks P0–3 and F0–3 if Pin 4 is also being used as a clock.
Logic Inputs:
The 12 external inputs to the AND array used to program jump conditions
between machine states, as determined by a given logic sequence. True and complement
signals are generated via use of “H” and “L”.
Logic Input/Clock:
A user programmable function:
POLARITY
Active-High (H)
2, 3, 5–9,
26–27
20–22
4
I0–I4, I7, I6
I8–I9
I13–I15
CLK2
Active-High/Low
(H/L)
•
Logic Input:
A 13th external logic input to the AND array, as above.
•
Clock:
A 2nd clock for the State Registers P4–7 and Output Registers F4–7, as above.
Note that input buffer I
5
must be deleted from the AND array (i.e., all fuse locations “Don’t
Care”) when using Pin 4 as a Clock.
23
I12
Logic/Diagnostic Input:
A 14th external logic input to the AND array, as above, when
exercising standard TTL or CMOS levels. When I12 is held at +10V, device outputs F0–F7
reflect the contents of State Register bits P0–P7. The contents of each Output Register
remains unaltered.
Logic/Diagnostic Input:
A 15th external logic input to the AND array, as above, when
exercising standard TTL levels. When I11 is held at +10V, device outputs F0–F7 become
direct inputs for State Register bits P0–P7; a Low-to-High transition on the appropriate
clock line loads the values on pins F0–F7 into the State Register bits P0–P7. The contents
of each Output Register remains unaltered.
Logic/Diagnostic Input:
A 16th external logic input to the AND array, as above, when
exercising standard TTL levels. When I
10
is held at +10V, device outputs F0–F7 become
direct inputs for Output Register bits Q0–Q7; a Low-to-High transition on the appropriate
clock line loads the values on pins F0–F7 into the Output Register bits Q0–Q7. The con-
tents of each State Register remains unaltered.
Logic Outputs/Diagnostic Outputs/Diagnostic Inputs:
Eight device outputs which nor-
mally reflect the contents of Output Register Bits Q0–Q7, when enabled. When I12 is held
at +10V, F0–F7 = (P0–P7). When I11 is held at +10V, F0–F7 become inputs to State Reg-
ister bits P0–P7. When I10 is held at +10V, F0–F7 become inputs to Output Register bits
Q0–Q7.
Initialization or Output Enable Input:
A user programmable function:
Active-High/Low
(H/L)
Active-High (H)
Active-High/Low
(H/L)
24
I11
Active-High/Low
(H/L)
25
I10
Active-High/Low
(H/L)
10–13
15–18
F0 – F7
Active-High (H)
19
INIT/OE
•
Initialization:
Provides an asynchronous preset to logic “1” or reset to logic “0” of all
State and Output Register bits, determined individually for each register bit through user
programming. INIT overrides Clock, and when held High, clocking is inhibited and F0–F7
and P0–P7 are in their initialization state. Normal clocking resumes with the first full clock
pulse following a High-to-Low clock transition, after INIT goes Low. See timing definition for
t
NVCK
and t
VCK
.
•
Output Enable:
Provides an output enable function to buffers F0–F7 from the Output
Registers.
Active-High (H)
Active-Low (L)
1996 Nov 12
3
Philips Semiconductors
Product specification
Programmable logic sequencers
(16
×
64
×
8)
TRUTH TABLE
1, 2, 3, 4, 5, 6, 7
OPTION
V
CC
INIT
H
L
L
L
L
L
L
+5V
H
X
X
X
X
L
L
L
L
L
L
↑
X
X
OE
I10
*
+10V
+10V
X
X
X
X
X
+10V
+10V
X
X
X
X
X
X
X
X
X
I11
*
X
X
+10V
+10V
X
X
X
X
X
+10V
+10V
X
X
X
X
X
X
X
I12
*
X
X
X
X
+10V
X
*
X
X
X
X
+10V
X
X
X
X
X
X
CK
X
↑
↑
↑
↑
X
X
X
↑
↑
↑
↑
X
X
↑
↑
↑
↑
X
J
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
H
H
X
K
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
H
L
H
X
PLUS405-37/-45
Q
P
H/L
Q
P
Q
P
L
H
Q
P
Q
P
Q
P
Q
P
Q
P
L
H
Q
P
Q
P
Q
P
L
H
Q
P
H
Q
F
H/L
L
H
Q
F
Q
F
Q
F
Q
F
Q
F
L
H
Q
F
Q
F
Q
F
Q
F
Q
F
L
H
Q
F
H
F
Q
F
L
H
L
H
Q
P
Q
F
Hi-Z
L
H
L
H
Q
P
Q
F
Q
F
L
H
Q
F
NOTES:
1. Positive Logic:
S/R (or J/K) = T
0
+ T
1
+ T
2
+ . . . T
63
T
n
= (C0, C1) (I0, I1, I2, . . .) (P0, P1, . . . P7)
2. Either Initialization (Active-High) or Output Enable (Active-Low) are available, but not both. The desired function is a user-programmable
option.
3.
↑
denotes transition from Low-to-High level.
4. * = H or L or +10V
5. X = Don’t Care (<5.5V)
6. H/L implies that either a High or a Low can occur, depending upon user-programmed selection (each State and Output Register individually
programmable).
7. When using the F
n
pins as inputs to the State and Output Registers in diagnostic mode, the F buffers are 3-Stated and the indicated levels
on the output pins are forced by the user.
VIRGIN STATE
A factory-shipped virgin device contains all fusible links intact, such
that:
1. INIT/OE is set to INIT. In order to use the INIT function, the user
must select either the PRESET or the RESET option for each
flip-flop. Note that regardless of the user-programmed
initialization, or even if the INIT function is not used, all registers
are preset to “1” by the power-up procedure.
2. All transition terms are inactive (0).
3. All S/R (or J/K) flip-flop inputs are disabled (0).
4. The device can be clocked via a Test Array preprogrammed with
a standard test pattern.
5. Clock 2 is inactive.
LOGIC FUNCTION
Q3
1
Q2
0
Q1
1
Q0
0
S
R
PRESENT STATE
A B C ...
S
n + 1
NEXT STATE
STATE REGISTER
0
0
0
1
⋅ ⋅ ⋅
SET Q
0
: J
0
= (Q
2
Q
1
Q
0
) A B C . . .
K
0
= 0
RESET Q
1
: J
1
= 0
K
1
= (Q
3
Q
2
Q
1
Q
0
) A B C . . .
⋅
⋅
⋅ ⋅ ⋅
⋅
⋅
⋅
⋅ ⋅ ⋅
HOLD Q
2
: J
2
= 0
K
2
= 0
RESET Q
3
: J
3
= (Q
3
Q
2
Q
1
Q
0
) A B C . . .
K
3
= (Q
3
Q
2
Q
1
Q
0
) A B C . . .
⋅
⋅
⋅
⋅
⋅
⋅
⋅ ⋅ ⋅
⋅ ⋅ ⋅
SP00231
1996 Nov 12
4
Philips Semiconductors
Product specification
Programmable logic sequencers
(16
×
64
×
8)
PLUS405-37/-45
FUNCTIONAL DIAGRAM
P63
I
P0
15
I/CLK
X2
J
(4)
K
P
4
4
Q
R
J
(4)
K
P
4
4
Q
R
J
(4)
4
K
P
4
4
Q
R
F
J
(4)
K
P
4
4
Q
R
4
CK
F
INIT/OE
SP00252
1996 Nov 12
5
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