Commercial/ Industrial PEEL™ 22CV10A-7/-10/-15/-25 CMOS Programmable Electrically Erasable Logic Device Features ■ High Speed/Low Power - Speeds ranging from 7ns to 25ns - Power as low as 30mA at 25MHz ■ Electrically Erasable Technology - Superior factory testing - Reprogrammable in plastic package - Reduces retrofit and development costs ■ Development/Programmer Support - Third party software and programmers - ICT PLACE Development Software ■ Architectural Flexibility - 132 product term X 44 input AND array - Up to 22 inputs and 10 outputs - Up to 12 configurations per macrocell - Synchronous preset, asynchronous clear - Independent output enables - 24-pin DIP/SOIC/TSSOP and 28-pin PLCC ■ Application Versatility - Replaces random logic - Pin and JEDEC compatible with 22V10 - Enhanced Architecture fits more logic than ordinary PLDs General Description The PEEL™22CV10A is a Programmable Electrically Erasable Logic (PEEL™) device providing an attractive alternative to ordinary PLDs. The PEEL™22CV10A offers the performance, flexibility, ease of design and production practicality needed by logic designers today. The PEEL™22CV10A is available in 24-pin DIP, SOIC, TSSOP and 28-pin PLCC packages (see Figure 1), with speeds ranging from 7ns to 25ns and with power consumption as low as 30mA. EE-reprogrammability provides the convenience of instant reprogramming for development and a reusable production inventory, minimizing the impact of programming changes or errors. EE-reprogrammability also improves factory testability, thus ensuring the highest quality possible. The PEEL™22CV10A is JEDEC file compatible with standard 22V10 PLDs. Eight additional configurations per macrocell (a total of 12) are also available by using the “+” software/programming option (i.e., 22CV10A+). The additional macrocell configurations allow more logic to be put into every design. Programming and development support for the PEEL™22CV10A are provided by popular third-party programmers and development software. ICT also offers free PLACE development software. Figure 1. Pin Configuration Figure 2. Block Diagram DIP PLCC I/CLK 1 24 VCC I 2 23 I/O I 3 22 I/O I 4 21 I/O I 5 20 I/O I 6 19 I/O I 7 18 I/O I 8 17 I/O I 9 16 I/O I 10 15 I/O I 11 14 I/O GND 12 13 I TSSOP SOIC *Optional extra ground pin for -7/I-7 speed grade. 1 of 10 04-02-009F PEELTM 22CV10A ASYNCHRONOUS CLEAR (TO ALL MACROCELLS) 0 2 9 MACRO CELL I/O MACRO CELL I/O MACRO CELL I/O MACRO CELL I/O I/CLK 10 20 I 21 33 I 34 48 I 49 MACRO CELL I/O 65 I 66 MACRO CELL I/O 82 I 83 MACRO CELL I/O 97 I 98 MACRO CELL I/O MACRO CELL I/O 110 I 111 121 I 124 MACRO CELL 130 I I/O SYNCHRONOUS PRESET (TO ALL MACROCELLS) 131 I I Figure 3. PEEL™22CV10A Logic Array Diagram 2 of 10 04-02-009F PEELTM 22CV10A Function Description The PEEL™22CV10A implements logic functions as sumof-products expressions in a programmable-AND/ fixed-OR logic array. User-defined functions are created by programming the connections of input signals into the array. Userconfigurable output structures in the form of I/O macrocells further increase logic flexibility. Architecture Overview The PEEL™22CV10A architecture is illustrated in the block diagram of Figure 2. Twelve dedicated inputs and 10 I/Os provide up to 22 inputs and 10 outputs for creation of logic functions. At the core of the device is a programmable electrically-erasable AND array which drives a fixed OR array. With this structure, the PEEL™22CV10A can implement up to 10 sum-of-products logic expressions. Associated with each of the 10 OR functions is an I/O macrocell which can be independently programmed to one of 4 different configurations. The programmable macrocells allow each I/O to create sequential or combinatorial logic functions with either active-high or active-low polarity. AND/OR Logic Array The programmable AND array of the PEEL™22CV10A (shown in Figure 3) is formed by input lines intersecting product terms. The input lines and product terms are used as follows: programming selected connections in the AND array. (Note that PEEL™ device programmers automatically program the connections on unused product terms so that they will have no effect on the output function.) Variable Product Term Distribution The PEEL™22CV10A provides 120 product terms to drive the 10 OR functions. These product terms are distributed among the outputs in groups of 8, 10, 12, 14 and 16 to form logical sums (see Figure 3). This distribution allows optimum use of device re-sources. Programmable I/O Macrocell The output macrocell provides complete control over the architecture of each output. The ability to configure each output independently permits users to tailor the configuration of the PEEL™22CV10A to the precise requirements of their designs. Macrocell Architecture Each I/O macrocell, as shown in Figure 4, consists of a Dtype flip-flop and two signal-select multiplexers. The configuration of each macrocell is determined by the two EEPROM bits controlling these multiplexers (refer to Table 1). These bits determine output polarity and output type (registered or non-registered). Equivalent circuits for the four macro-cell configurations are illustrated in Figure 5. Output Type 44 Input Lines: The signal from the OR array can be fed directly to the output pin (combinatorial function) or latched in the D-type flipflop (registered function). The D-type flip-flop latches data on the rising edge of the clock and is controlled by the global preset and clear terms. When the synchronous preset term is satisfied, the Q output of the register will be set HIGH at the next rising edge of the clock input. Satisfying the asynchronous clear term will set Q LOW, regardless of the clock state. If both terms are satisfied simultaneously, the clear will override the preset. 24 input lines carry the true and complement of the signals applied to the 12 input pins 20 additional lines carry the true and complement values of feedback or input signals from the 10 I/Os 132 product terms: 120 product terms (arranged in 2 groups of 8, 10, 12, 14 and 16) used to form logical sums 10 output enable terms (one for each I/O) 1 global synchronous present term 1 global asynchronous clear term Output Polarity At each input-line/product-term intersection there is an EEPROM memory cell which determines whether or not there is a logical connection at that intersection. Each product term is essentially a 44-input AND gate. A product term which is connected to both the true and complement of an input signal will always be FALSE, and thus will not affect the OR function that it drives. When all the connections on a product term are opened, a “don’t care” state exists and that term will always be TRUE. When programming the PEEL™22CV10A, the device programmer first performs a bulk erase to remove the previous pattern. The erase cycle opens every logical connection in the array. The device is then configured to perform the user-defined function by Each macrocell can be configured to implement active-high or active-low logic. Programmable polarity eliminates the need for external inverters. Output Enable The output of each I/O macrocell can be enabled or disabled under the control of its associated programmable output enable product term. When the logical conditions programmed on the output enable term are satisfied, the output signal is propagated to the I/O pin. Otherwise, the output buffer is driven into the high-impedance state. Under the control of the output enable term, the I/O pin can function as a dedicated input, a dedicated output, or a bidirectional I/O. Opening every connection on the output 3 of 10 04-02-009F PEELTM 22CV10A enable term will permanently enable the output buffer and yield a dedicated output. Conversely, if every connection is intact, the enable term will always be logically false and the I/O will function as a dedicated input. Input/Feedback Select When configuring an I/O macrocell to implement a registered function (configurations 1 and 2 in Figure 5), the Q output of the flip-flop drives the feedback term. When configuring an I/O macrocell to implement a combinatorial function (configurations 3 and 4 in Figure 5), the feedback signal is taken from the I/O pin. In this case, the pin can be used as a dedicated input or a bi-directional I/O. (Refer also to Table 1.) Additional Macro Cell Configurations Besides the standard four-configuration macrocell shown in Figure 5, each PEEL™22CV10A provides an additional eight configurations that can be used to increase design flexibility. The configurations are the same as provided by the PEEL™18CV8 and PEEL™22CV10AZ. However, to maintain JEDEC file compatibility with standard 22V10 PLDs the additional configurations can only be utilized by specifying the PEEL™22CV10A+ for logic assembly and programming. To reference these additional configurations please refer to the PEEL™22CV10A+ specifications at the end of this data sheet. Design Security The PEEL™22CV10A provides a special EEPROM security bit that prevents unauthorized reading or copying of designs programmed into the device. The security bit is set by the PLD programmer, either at the conclusion of the programming cycle or as a separate step after the device has been programmed. Once the security bit is set, it is impossible to verify (read) or program the PEEL™ until the entire device has first been erased with the bulk-erase function. Signature Word The signature word feature allows a 24-bit code to be programmed into the PEEL™22CV10A if the PEEL™22CV10A+ software option is used. The code can be read back even after the security bit has been set. The signature word can be used to identify the pattern programmed into the device or to record the design revision, etc. Figure 4. Block Diagram of the PEEL™ 22CV10A I/O Macrocell. 4 of 10 04-02-009F PEELTM 22CV10A Figure 5. Four Configurations of the PEEL™22CV10A I/O Macrocell Table 1. PEEL™ 22CV10A Macrocell Configuration Bits Configuration # A B 1 0 0 Input/Feedback Select Active Low Register Feedback 2 1 0 3 0 1 1 Register Active High Active Low Bi-Directional I/O 4 Output Select 1 Combinatorial Active High 5 of 10 04-02-009F PEELTM 22CV10A Additional Macrocell Configurations Besides the standard four-configuration macrocells, each PEEL™22CV10A provides an additional eight configurations (twelve total) that can be used to increase design flexibility (see Figure 6 and Table 2). For logic assembly of all twelve configurations, specify PEEL™22CV10A+. Also, select the PEEL™22CV10A+ for programming. Figure 6. Twelve Configurations of the PEEL™22CV10A+ I/O Macrocell # Table 2. PEEL™ 22CV10A+ Macrocell Configuration Bits Configuration Input/Feedback Select Output Select A B C D 1 1 1 1 1 2 0 1 1 1 3 1 0 1 1 4 0 0 1 1 5 1 1 1 0 6 0 1 1 0 7 1 0 1 0 8 0 0 1 0 9 1 1 0 0 10 1 0 0 0 11 1 0 0 0 12 0 0 0 0 Register Bi-Directional I/O Combinatorial Register Combinatorial Feedback Combinatorial Register Register Feedback Combinatorial 6 of 10 Active Low Active High Active Low Active High Active Low Active High Active Low Active High Active Low Active High Active Low Active High 04-02-009F PEELTM 22CV10A Table 6. Absolute Maximum Ratings This device has been designed and tested for the recommended operating conditions. Proper operation outside of these levels is not guaranteed. Exposure to absolute maximum ratings may cause permanent damage. Symbol Parameter Conditions Ratings Unit VCC Supply Voltage Relative to Ground -0.5 to + 7.0 V VI, VO Voltage Applied to Any Pin2 Relative to Ground1 -0.5 to VCC + 0.6 V IO Output Current Per pin (IOL, IOH) ±25 mA TST Storage Temperature -65 to + 150 °C TLT Lead Temperature +300 °C Soldering 10 seconds Table 7. Operating Ranges Symbol Parameter VCC Supply Voltage Conditions Min Max Commercial 4.75 5.25 Industrial 4.5 5.5 0 +70 -40 +85 V Commercial TA Unit Ambient Temperature °C Industrial TR Clock Rise Time See Note 3 20 ns TF Clock Fall Time See Note 3 20 ns TRVCC VCC Rise Time See Note 3 250 ms Table 8. D.C. Electrical Characteristics over the recommended operating conditions Symbol Parameter Conditions VOH Output HIGH Voltage VCC = Min, IOH = -4.0mA 2.4 V VOHC Output HIGH Voltage - CMOS13 VCC = Min, IOH = -10µA VCC - 0.3 V VOL Output LOW Voltage - TTL VCC = Min, IOL = 16mA 0.5 V VOLC Output LOW Voltage - CMOS13 VCC = Min, IOH = -10µA 0.15 V VIH Input HIGH Level 2.0 VCC + 0.3 V VIL Input LOW Level -0.3 0.8 V IIL Input Leakage Current VCC = Max, VIN = GND ≤ VIN £ VCC ±10 µA IOZ Output Leakage Current I/O = High-Z, GND ≤ VO ≤ VCC ±10 µA ICC10 VCC Current (See CR-1 for typical ICC) CIN7 Input Capacitance COUT7 Output Capacitance Min Max -7/I-7 90/100 VIN = 0V or 3V f = 25MHz -10/I-10 90/100 All outputs disabled4 -15/I-15 135/145 -25/I-25 30/40 TA = 25°C, VCC = 5.0V @ f = 1 MHz 7 of 10 Unit mA 6 pF 12 pF 04-02-009F PEELTM 22CV10A Table 9. A.C. Electrical Characteristics Over the Operating Range8,11 -7 / I-7 Min -10 / I-10 Max Min Max -15 / I-15 Min Max -25 / I-25 Min Max Unit Symbol Parameter tPD Input5 to non-registered output 7.5 10 15 25 ns tOE Input5 to output enable6 7.5 10 15 25 ns tOD Input5 to output disable6 7.5 10 15 25 ns tCO1 Clock to Output 5.5 6 8 15 ns tCO2 Clock to comb. output delay via internal registered feedback 10 12 17 35 ns tCF Clock to Feedback 3.5 4 5 9 ns tSC Input5 or Feedback Setup to Clock 3 5 8 15 ns tHC Input5 Hold After Clock 0 0 0 0 ns tCL, tCH Clock Low Time, Click High Time8 3 4 6 13 ns tCP Min Clock Period Ext (tSC + tCO1) 8.5 11 18 30 ns fMAX1 Internal Feedback (1tSC + tCF)12 142 111 76.9 41.6 MHz fMAX2 External Feedback (1/tCP)12 117 90.9 62.5 33.3 MHz fMAX3 No Feedback (1/tCL + tCH)12 166 125 83.3 38.4 MHz tAW Asynchronous Reset Pulse Width 7.5 10 15 25 ns tAP Input to Asynchronous Reset 7.5 10 15 25 ns tAR Asynch. Reset recovery time 7.5 10 15 25 ns tRESET Power-on Reset Time for registers in Clear State 5 5 5 5 µs 5 Switching Waveforms Inputs, I/O, Registered Feedback, Synchronous Preset Clock Asynchronous Reset Registered Outputs Combinatorial Outputs Notes 1. Minimum DC input is -0.5V, however inputs may undershoot to -2.0V for periods less than 20ns. 2. VI and VO are not specified for program/verify operation. 3. Test points for Clock and VCC in tR, tF are referenced at 10% and 90% levels. 4. I/O pins are 0V and 3V. 5. “Input” refers to an Input pin signal. 6. tOE is measured from input transition to VREF ± 0.1V, tOD is measured from input transition to VOH -0.1V or VOL +0.1V; VREF =VL see test loads in Section 5 of the Data Book. 7. Capacitances are tested on a sample basis. 8. Test conditions assume: signal transition times of 3ns or less from the 10% and 90% points, timing reference levels of 1.5V (unless otherwise specified). 9. Test one output at a time for a duration of less than 1sec. 10. ICC for a typical application: This parameter is tested with the device programmed as an 8-bit Counter. 11. PEEL™ Device test loads are specified in Section 6 of this Data Book. 12. Parameters are not 100% tested. Specifications are based on initial characterization and are tested after any design or process modification which may affect operational frequency. 13. Available only for 22CV10A -15/I-15/-25/I-25 grades. 8 of 10 04-02-009F PEELTM 22CV10A Table 6. Ordering Information Part Number Speed Temperature PEEL22CV10AP-7 Package C 7.5ns P24 PEEL22CV10API-7 I PEEL 22CV10AJ-7 C 7.5ns J28 PEEL 22CV10AJI-7 I PEEL 22CV10AS-7 C 7.5ns S24 PEEL 22CV10ASI-7 I PEEL 22CV10AT-7 C 7.5ns T24 PEEL 22CV10ATI-7 I PEEL 22CV10AP-10 C 10ns P24 PEEL 22CV10API-10 I PEEL 22CV10AJ-10 C 10ns J28 PEEL 22CV10AJI-10 I PEEL 22CV10AS-10 C 10ns S24 PEEL 22CV10ASI-10 I PEEL 22CV10AT-10 C 10ns T24 PEEL 22CV10ATI-10 I PEEL 22CV10AP-15 C 15ns P24 PEEL 22CV10API-15 I PEEL 22CV10AJ-15 C 15ns J28 PEEL 22CV10AJI-15 I PEEL 22CV10AS-15 C 15ns S24 PEEL 22CV10ASI-15 I PEEL 22CV10AT-15 C 15ns T24 PEEL 22CV10ATI-15 I PEEL 22CV10AP-25 C 25ns P24 PEEL 22CV10API-25 I PEEL 22CV10AT-25 C 25ns T24 PEEL 22CV10ATI-25 I PEEL 22CV10AJ-25 C 25ns J28 PEEL 22CV10AJI-25 I PEEL 22CV10AS-25 C 25ns S24 PEEL 22CV10ASI-25 I 9 of 10 04-02-009F PEELTM 22CV10A Part Number Device Suffix PEEL™ 22CV10A PI-25 Package Speed P = Plastic 300mil DIP J = Plastic (J) Leaded Chip Carrier (PLCC) S = SOIC T = TSSOP -7 = 7.5ns tpd -10 = 10ns tpd -15 = 15ns tpd -25 = 25ns tpd Temperature Range and Power Options (Blank) = Commercial 0 to 70°C I = Industrial -40 to +85°C 10 of 10 04-02-009F