1CY 7C34 4B
fax id: 6101
CY7C344
CY7C344B
32-Macrocell MAX EPLD
sents the densest EPLD of this size. Eight dedicated inputs
Features
and 16 bidirectional I/O pins communicate to one logic array
High-performance, high-density replacement for TTL, block. In the CY7C344 LAB there are 32 macrocells and 64
74HC, and custom logic
expander product terms. When an I/O macrocell is used as an
input, two expanders are used to create an input path. Even if
32 macrocells, 64 expander product terms in one LAB
all of the I/O pins are driven by macrocell registers, there are
8 dedicated inputs, 16 I/O pins
still 16 buried registers available. All inputs, macrocells, and
0.8-micron double-metal CMOS EPROM technology
I/O pins are interconnected within the LAB.
(CY7C344)
The speed and density of the CY7C344/CY7C344B makes it
Advanced 0.65-micron CMOS EPROM technology to
a natural for all types of applications. With just this one device,
increase performance (CY7C344B)
the designer can implement complex state machines, regis-
28-pin 300-mil DIP, cerDIP or 28-pin HLCC, PLCC
tered logic, and combinatorial glue logic, without using mul-
package
tiple chips. This architectural flexibility allows the
Functional Description CY7C344/CY7C344B to replace multichip TTL solutions,
whether they are synchronous, asynchronous, combinatorial,
Available in a 28-pin 300-mil DIP or windowed J-leaded ce-
or all three.
ramic chip carrier (HLCC), the CY7C344/CY7C344B repre-
[1]
Logic Block Diagram Pin Configurations
HLCC
15(22) INPUT INPUT 1(8)
Top View
15(23) INPUT INPUT/CLK 2(9)
27(6) INPUT INPUT 13(20)
28(7) INPUT INPUT 14(21) 432 1 28 27 26
5 25 I/O
I/O
6
24 I/O
INPUT
MACROCELL 2 MACROCELL 1 I/O 3(10)
7
INPUT 23 INPUT
I/O 4(11)
MACROCELL 4 MACROCELL 3 8
INPUT 22 INPUT
G
9
I/O 5(12) INPUT/CLK INPUT
MACROCELL 6 MACROCELL 5 I 21
L 10
I/O 20 INPUT
I/O 6(13)
MACROCELL 8 MACROCELL 7 O
O 11 I/O
I/O 19
I/O 9(16) 12 13 14 1516 1718
MACROCELL 10 MACROCELL 9
B
C I/O 10(17)
MACROCELL 12 MACROCELL 11
A
O C3442
I/O 11(18)
MACROCELL 14 MACROCELL 13
L
N
I/O 12(19)
MACROCELL 16 MACROCELL 15
CerDIP
T
I/O 17(24)
MACROCELL 18 MACROCELL 17
Top View
B
R
I/O 18(25)
MACROCELL 20 MACROCELL 19
U INPUT INPUT
1 28
O
I/O 19(26)
MACROCELL 22 MACROCELL 21
S INPUT/CLK 2 27 INPUT
L
I/O 20(27) I/O I/O
MACROCELL 24 MACROCELL 23 3 26
I/O I/O
I/O 23(2) 4 25
MACROCELL 26 MACROCELL 25
I/O I/O
5 24
I/O 24(3)
MACROCELL 28 MACROCELL 27
I/O I/O
6 23
I/O 25(4)
MACROCELL 30 MACROCELL 29
V V
CC 7 22 CC
I/O 26(5)
MACROCELL 32 MACROCELL 31
GND 8 21 GND
I/O I/O
9 20
I/O I/O
10 19
I/O I/O
C3441 11 18
32
64 EXPANDER PRODUCT TERM ARRAY
I/O I/O
12 17
INPUT INPUT
13 16
INPUT INPUT
14 15
C3443
Selection Guide
7C34415 7C34420 7C34425
7C344B10 7C344B12 7C344B15 7C344B20 7C344B25
Maximum Access Time (ns) 10 12 15 20 25
Maximum Commercial 200 200 200 200 200
Operating
Military 220 220 220
Current (mA)
Industrial 220 220 220 220
Maximum Standby Commercial 150 150 150 150 150
Current (mA)
Military 170 170 170
Industrial 170 170 170 170
Shaded area contains preliminary information.
Note:
1. Numbers in () refer to J-leaded packages.
Cypress Semiconductor Corporation 3901 North First Street San Jose CA 95134 408-943-2600
January 1990 Revised October 1995
CY7C344
CY7C344B
DC Output Current, per Pin ......................25 mA to +25 mA
Maximum Ratings
[2]
DC Input Voltage .........................................3.0V to +7.0V
(Above which the useful life may be impaired. For user guide-
DC Program Voltage .................................................. +13.0V
lines, not tested.)
Storage Temperature ................................. 65C to +150C
Operating Range
Ambient Temperature with
Ambient
Power Applied...................................................0C to +70C
Range Temperature V
CC
Maximum Junction Temperature (Under Bias)............. 150C
Commercial 0C to +70C 5V 5%
Supply Voltage to Ground Potential............... 2.0V to +7.0V
Industrial 40C to +85C 5V 10%
Maximum Power Dissipation...................................1500 mW
Military 55C to +125C (Case) 5V 10%
DC V or GND Current............................................500 mA
CC
Static Discharge Voltage
(per MIL-STD-883, Method 3015)..............................>2001V
[3]
Electrical Characteristics Over the Operating Range
Parameter Description Test Conditions Min. Max. Unit
V Output HIGH Voltage V = Min., I = 4.0 mA 2.4 V
OH CC OH
V Output LOW Voltage V = Min., I = 8 mA 0.45 V
OL CC OL
V Input HIGH Level 2.2 V +0.3 V
IH CC
V Input LOW Level 0.3 0.8 V
IL
I Input Current GND V V 10 +10 A
IX IN CC
I Output Leakage Current V = V or GND 40 +40 A
OZ O CC
[4, 5]
I Output Short Circuit Current V = Max., V = 0.5V 30 90 mA
OS CC OUT
I Power Supply V = V or GND (No Load) Commercial 150 mA
CC1 I CC
Current (Standby)
Military/Industrial 170 mA
I Power Supply Current V = V or GND (No Load) Commercial 200 mA
CC2 I CC
[4,6]
f = 1.0 MHz
Military/Industrial 220 mA
t Recommended Input Rise Time 100 ns
R
t Recommended Input Fall Time 100 ns
F
Capacitance
Parameter Description Test Conditions Max. Unit
C Input Capacitance V = 2V, f = 1.0 MHz 10 pF
IN IN
C Output Capacitance V = 2.0V, f = 1.0 MHz 10 pF
OUT OUT
[7]
AC Test Loads and Waveforms
R1 464 R1 464
5V 5V
ALL INPUT PULSES
OUTPUT OUTPUT
3.0V
90%
90%
10%
R2 R2 10%
50 pF 5pF GND
t
f
250 250
6ns 6ns
INCLUDING
t t
R F
JIGAND
SCOPE C3444 C3445
(a) (b)
Equivalent to: THVENIN EQUIVALENT (commercial/military)
163
OUTPUT 1.75V
C3446
Notes:
2. Minimum DC input is 0.3V. During transitions, the inputs may undershoot to 2.0V for periods less than 20 ns.
3. Typical values are for T = 25C and V = 5V.
A CC
4. Guaranteed by design but not 100% tested.
5. Not more than one output should be tested at a time. Duration of the short circuit should not be more than one second. V = 0.5V has been chosen to avoid
OUT
test problems caused by tester ground degradation.
6. Measured with device programmed as a 16-bit counter.
7. Part (a) in AC Test Load and Waveforms is used for all parameters except t and t , which is used for part (b) in AC Test Load and Waveforms. All external timing
ER XZ
parameters are measured referenced to external pins of the device.
2