KS88C0916/P0916 MICROCONTROLLER 1 PRODUCT OVERVIEW PRODUCT OVERVIEW KS88-SERIES MICROCONTROLLERS Samsung's KS88 series of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mask-programmable ROM sizes. Important CPU features include: — Efficient register-oriented architecture — Selectable CPU clock sources — Idle and Stop power-down mode release by interrupt — Built-in basic timer with watchdog function A sophisticated interrupt structure recognizes up to eight interrupt levels. Each level can have one or more interrupt sources and vectors. Fast interrupt processing (within a minimum six CPU clocks) can be assigned to specific interrupt levels. KS88C0916/P0916 MICROCONTROLLER The KS88C0916/P0916 single-chip CMOS microcontroller is fabricated using a highly advanced CMOS process and is based on Samsung’s newest CPU architecture. The KS88C0916 is the microcontroller which has 16Kbytes mask-programmable ROM. The KS88P0916 is the microcontroller which has 16Kbytes one-time-programmable EPROM. — One 8-bit timer/counter and one 16-bit timer/counter with selectable operating modes. — One 8-bit counter with auto-reload function and one-shot or repeat control. The KS88C0916 is a versatile general-purpose microcontroller. It is currently available in a 32-pin SOP and SDIP package. Using a proven modular design approach, Samsung engineers developed the KS88C0916/P0916 by integrating the following peripheral modules with the powerful SAM87 core: — Four programmable I/O ports, including three 8-bit ports and one 2-bit port, for a total of 26 pins. — Twelve bit-programmable pins for external interrupts. — One 8-bit basic timer for oscillation stabilization and watchdog functions (system reset). Figure 1-1. KS88C0916 Microcontroller 1-1 PRODUCT OVERVIEW KS88C0916/P0916 MICROCONTROLLER FEATURES CPU Timers and Timer/Counters • • One programmable 8-bit basic timer (BT) for oscillation stabilization control or watchdog timer (software reset) function • One 8-bit timer/counter (Timer 0) with three operating modes; Interval, Capture and PWM • One 16-bit timer/counter (Timer 1) with two operating modes; Interval and Capture SAM87 CPU core Memory • 16-Kbyte internal program memory (ROM) • 317-byte internal register file Instruction Set • 78 instructions • IDLE and STOP instructions added for powerdown modes Carrier Frequency Generator • Instruction Execution Time • 750 ns at 8-MHz fOSC (minimum) Interrupts One 8-bit counter with auto-reload function and one-shot or repeat control (Counter A) Operating Temperature Range • – 20°C to + 85°C • Six interrupt levels and 18 interrupt sources Operating Voltage Range • 15 vectors (14 sources have a dedicated vector address and four sources share a single vector) • 2.0 V to 5.5 V at 4 MHz fOSC • Fast interrupt processing feature (for one selected interrupt level) • 2.4 V to 5.5 V at 8 MHz fOSC Package Type I/O Ports • Three 8-bit I/O ports (P0–P2) and one 2-bit port (P3) for a total of 26 bit-programmable pins • Twelve input pins for external interrupts 1-2 • 32-pin SOP • 32-pin SDIP KS88C0916/P0916 MICROCONTROLLER PRODUCT OVERVIEW BLOCK DIAGRAM P0.00.7 (INT0NT4) P1.01.7 PORT 0 PORT 1 RESET TEST XIN XOUT MAIN OSC INTERNAL BUS P2.02.3 (INT5NT8) P2.42.7 PORT2 8-BIT BASIC TIMER I/O PORT and INTERRUPT CONTROL SAM8 CPU 8-BIT TIMER/ COUNTER 16-BIT TIMER/ COUNTER PORT 3 P3.0/T0PWM/ T0CAP/T1CAP P3.1/REM/T0CK 16-KB ROM 317-BYTES REGISTER FILE CARRIER GENERATOR (COUNTER A) Figure 1-2. Block Diagram 1-3 PRODUCT OVERVIEW KS88C0916/P0916 MICROCONTROLLER PIN ASSIGNMENTS VSS XIN XOUT TEST P2.0 / INT5 P2.1 / INT6 P2.2 / INT7 P2.3 / INT8 P0.0 / INT0 P0.1 / INT1 P0.2 / INT2 P0.3 / INT3 P0.4 / INT4 P0.5 / INT4 P0.6 / INT4 P0.7 / INT4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 KS88C0916 32-SOP/SDIP (Top View) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VDD RESET P3.1 / REM / T0CK P3.0 / T0PWM / T0CAP / T1CAP P2.7 P2.6 P2.5 P2.4 P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 Figure 1-3. Pin Assignment Diagram (32-Pin SOP/SDIP Package) 1-4 KS88C0916/P0916 MICROCONTROLLER PRODUCT OVERVIEW PIN DESCRIPTIONS Table 1-1. Pin Descriptions Pin Names Pin Type Pin Description Circuit Type Pin No. Shared Functions P0.0–P0.7 I/O I/O port with bit-programmable pins. Configurable to input or push-pull output mode. Pull-up resistors are assignable by software. Pins can be assigned individually as external interrupt inputs with noise filters, interrupt enable/ disable, and interrupt pending control. 1 9–16 INT0–INT4 P1.0–P1.7 I/O I/O port with bit-programmable pins. Configurable to Schmitt trigger input mode or output mode. Pin circuits are either pushpull or n-channel open-drain type. Pull-up resistors are assignable by software. 3 17–24 — P2.0–P2.3 P2.4–P2.7 I/O General-purpose I/O port with bitprogrammable pins. Configurable to Schmitt trigger input mode, push-pull output mode, or n-channel open-drain output mode. Pullup resistors are assignable by software. Lower nibble pins, P2.3–P2.0, can be assigned as external interrupt inputs with noise filters, interrupt enable/disable, and interrupt pending control. 2 3 5–8, 25–28 INT5–INT8 — P3.0 P3.1 I/O 2-bit I/O port with bit-programmable pins. Configurable to Schmitt trigger input mode, push-pull output mode, or n-channel opendrain output mode. Pull-up resistors are assignable by software. The two port 3 pins have high current drive capability. 4 29 30 T0PWM/ T0CAP/ T1CAP/ REM/T0CK XIN, XOUT — System clock input and output pins — 2, 3 — RESET I System reset signal input pin with schmitt trigger circuit. 5 31 — TEST I Test signal input pin (for factory use only; — 4 — must be connected to VSS). VDD — Power supply input pin — 32 — VSS — Ground pin — 1 — 1-5 PRODUCT OVERVIEW KS88C0916/P0916 MICROCONTROLLER PIN CIRCUITS V DD PULL-UP RESISTOR (Typical 50 ΚΩ) PULL-UP ENABLE V DD DATA INPUT / OUTPUT OUTPUT DISABLE INTERRUPT INPUT IRQ6,7 (INT0 -4) NOISE FILTER V SS NORMAL INPUT Figure 1-4. Pin Circuit Type 1 (Port 0) 1-6 KS88C0916/P0916 MICROCONTROLLER PRODUCT OVERVIEW PIN CIRCUITS (Cont.) V DD PULL-UP RESISTOR (Typical 50 ΚΩ) PULL-UP ENABLE VDD DATA IN / OUT OPEN-DRAIN OUTPUT DISABLE VSS NORMAL INPUT EXTERNAL INTERRUPT IRQ5 (INT5-8) NOISE FILTER Figure 1–5. Pin Circuit Type 2 (Ports 2.0–2.3) 1-7 PRODUCT OVERVIEW KS88C0916/P0916 MICROCONTROLLER PIN CIRCUITS (Cont.) VDD PULL-UP RESISTOR (Typical 50 ΚΩ ) PULL-UP ENABLE VDD DATA IN / OUT OPENDRAIN OUTPUT DISABLE VSS NORMAL INPUT Figure 1-6. Pin Circuit Type 3 (Ports 1 and P2.4–P2.7) 1-8 KS88C0916/P0916 MICROCONTROLLER PRODUCT OVERVIEW PIN CIRCUITS (Cont.) VDD PULL-UP RESISTOR (Typical 50 Κ Ω) PULL-UP ENABLE PORT 3 DATA ALTERNATIVE OUTPUT SELECT VDD M U X DATA IN / OUT OPENDRAIN OUTPUT DISABLE VSS NORMAL INPUT ALTERNATIVE INPUT NOISE FILTER Figure 1-7. Pin Circuit Type 4 (Port 3) RESET Figure 1-8. Pin Circuit Type 5 (RESET) 1-9 PRODUCT OVERVIEW KS88C0916/P0916 MICROCONTROLLER NOTES 1-10 KS88C0916/P0916 MICROCONTROLLER 13 OTP OTP OVERVIEW The KS88P0916 single-chip CMOS microcontroller is the OTP (One Time Programmable) version of the KS88C0916 microcontroller. It has an on-chip EPROM instead of masked ROM. The KS88P0916 is fully compatible with the KS88C0916, both in function and in pin configuration. Because of its simple programming requirements, the KS88P0916 is ideal for use as an evaluation chip for the KS88C0916. Vss Xin Xout MODE / TEST PG M / P2.0 / INT5 MEM_R EG / P2.1 / INT6 A8 / P2.2 / INT7 A9 / P2.3 / INT8 A0 / P0.0 / INT0 A1 / P0.1 / INT1 A2 / P0.2 / INT2 A3 / P0.3 / INT3 A4 / P0.4 / INT4 A5 / P0.5 / INT4 A6 / P0.6 / INT4 A7 / P0.7 / INT4 1 2 3 4 5 6 7 8 KS88P0916 9 (Top View) 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VDD R ESET/ Vpp P3.1 / REM / T0CK/ C E P3.0 / O E P2.7 / A13 P2.6 /A12 P2.5 / A11 P2.4 /A10 P1.7 / D7 P1.6 /D6 P1.5 / D5 P1.4 / D4 P1.3 /D3 P1.2 / D2 P1.1 / D1 P1.0 /D0 Figure 13–1. KS88P0916 Pin Assignments 13-1 OTP KS88C0916/P0916 MICROCONTROLLER Table 13–1. Pin Descriptions used to read/write the EPROM Pin Name Pin No. I/O Function A0 - A13 7 - 16, 25 - 28 O Address lines to read/write EPROM D0 - D7 17 - 24 I/O 8-bit data input/output lines to read/write EPROM MODE 4 — Select EPROM mode. CE 30 I Chip enable (Connect to VSS, when read/write EPROM) OE 29 I Output enable PGM 5 I EPROM Program enable MEM_REG 6 I Select Memory space of EPROM VDD 32 — Supply voltage (normally 5 V) VPP 31 — EPROM Program/Verify voltage (normally 12.5 V) VSS 1 — GROUND Xin 2 — System Clock input pin Xout 3 — System Clock output pin CHARACTERISTICS OF EPROM OPERATION When +12.5 V is supplied to VPP and MODE pins of the KS88P0916, the EPROM programming mode is entered. The operating mode (read, write) is selected according to the input signals to the pins listed in Table2 as below. Table 13–2. Operating Mode Selection Criteria VDD MODE VPP PGM MEM OE 5V VPP 12.5 V 1 1 0 READ 0 1 1 PROGRAM 1 1 0 PROGRAM VERIFY NOTE: "0" means Low level; "1" means High level. 13-2 Mode KS88C0916/P0916 MICROCONTROLLER OTP A13 - A0 t OED D7 - D0 t OEH t ACC OE t OEW 12.5V MODE Figure 13–2. OTP Read Timing Table 13–3. OTP Read characteristics (TA = 25 °C ± 5°C, VDD = 5 V ± 5 %, VPP = 12.5 V ± 0.25V) Parameter Symbol Min Typ Max Units Address to Output Delay tACC — — 75 ns OE to Address Delay tOED 0 — — OE Pulse Width tOEW 75 — — Output hold from OE whichever occurs first tOEH 0 — — 13-3 OTP KS88C0916/P0916 MICROCONTROLLER PROGRAM PROGRAM VERIFY A13 - A0 Data In Stable D7 - D0 Data Out Valid t DS t OEH MODE t VS t DH t OE PGM t PW t OEW OE Figure 13–3. Program Memory Write Timing Table 13–4. OTP Program/Program Verify Characteristics (TA = 25 °C ± 5°C, VDD = 5 V ± 5 %, VPP = 12.5 V ± 0.25V) Parameter Symbol Min Typ Max Units VPP Setup Time tVS — 2 — µs Data Setup Time tDS — 2 — Data Hold Time tDH — 2 — PGM Pulse Width tPW — 300 500 Data Valid from OE tOE 75 — — OE Pulse Width tOEW 75 — — Output Enable to Output Float Delay tOEH 0 — 130 13-4 ns KS88C0916/P0916 MICROCONTROLLER OTP START Address = First Location VDD = 5 V, VPP = 12.5 V X=0 Program One 1ms Pulse Increment X YES X = 10 NO FAIL FAIL Verify 1 Byte Verify Byte PASS NO Last Address Increment Address YES VDD = VPP = 5V Device Failed FAIL Compare All byte PASS Device Passed Figure 13–4. OTP Programming Algorithm 13-5 OTP KS88C0916/P0916 MICROCONTROLLER NOTES 13-6 KS88C0916/P0916 MICROCONTROLLER 14 ELECTRICAL DATA ELECTRICAL DATA OVERVIEW In this section, KS88C0916/P0916 electrical characteristics are presented in tables and graphs. The information is arranged in the following order: — Absolute maximum ratings — D.C. electrical characteristics — Data retention supply voltage in Stop mode — Stop mode release timing when initiated by an external interrupt — Stop mode release timing when initiated by a Reset — I/O capacitance — A.C. electrical characteristics — Input timing for external interrupts (port 0, P2.3–P2.0) — Input timing for RESET — Oscillation characteristics — Oscillation stabilization time 14-1 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER Table 14-1. Absolute Maximum Ratings (TA = 25°C) Parameter Symbol Conditions Rating Unit Supply voltage VDD — – 0.3 to + 6.5 V Input voltage VIN — – 0.3 to VDD + 0.3 V Output voltage VO All output pins – 0.3 to VDD + 0.3 V Output current High IOH One I/O pin active – 18 mA All I/O pins active – 60 One I/O pin active + 30 Output current Low IOL Total pin current for ports 0, 1, and 2 + 100 Total pin current for port 3 + 20 mA Operating temperature TA — – 20 to + 85 °C Storage temperature TSTG — – 65 to + 150 °C Table 14-2. D.C. Electrical Characteristics (TA = – 20°C to + 85°C, VDD = 2.0 V to 5.5 V) Parameter Symbol Operating Voltage VDD Conditions FOSC = 8 MHz Min Typ Max Unit 2.4 — 5.5 V 2.0 — 5.5 — VDD (Instruction clock = 1.33 MHz) FOSC = 4 MHz (Instruction clock = 0.67 MHz) Input High voltage Input Low voltage Output High voltage 14-2 VIH1 All input pins except VIH2 and VIH3 0.8 VDD VIH2 RESET 0.95 VDD VDD VIH3 XIN VDD – 0.3 VDD VIL1 All input pins except VIL2 and VIL3 VIL2 RESET VIL3 XIN VOH1 VDD= 3.0 V IOH = – 7 mA Port 3 only 0 — 0.2 VDD V V 0.3 VDD 0.3 VDD – 2.0 — — V KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA Table 14-2. D.C. Electrical Characteristics (Continued) (TA = – 20°C to + 85°C, VDD = 2.0 V to 5.5 V) Parameter Symbol Conditions Min Typ Max Unit VDD – 1.0 — — V — 0.3 0.6 0.4 1.0 — 1 Output High voltage VOH2 VDD = 3.0 V IOH = – 200 µA All output pins except port 3 Output Low voltage VOL1 VDD = 3.0 V IOL = 1.5 mA, port 3 only VOL2 IOL = 1 mA Ports 0, 1 and 2 ILIH1 VIN = VDD; all input pins except XIN and XOUT ILIH2 VIN = VDD, XIN and XOUT ILIL1 VIN = 0 V; all input pins except XIN, XOUT, and RESET ILIL2 VIN = 0 V, XIN and XOUT Output High leakage current ILOH VOUT = VDD All output pins — — 1 µA Output Low leakage current ILOL VOUT = 0 V All output pins — — –1 µA Pull-up resistors RL1 VIN = 0 V; TA = 25°C VDD = 5.0 V ± 10% Ports 0–3 30 50 100 KΩ Supply current IDD1 Operating mode; VDD = 5.0 V ± 10% 4-MHz crystal — 4.5 9 mA IDD2 Idle mode; VDD = 5.0 V ± 10% 4-MHz crystal 1.6 3 IDD3 Stop mode; VDD = 5.0 V ± 10% 0.3 3 VDD = 3.6 V 0.1 1 Input High leakage current Input Low leakage current (See Note) — µA 20 — — –1 µA – 20 µA NOTE: Supply current does not include current drawn through internal pull-up resistors or external output current loads. 14-3 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER Table 14-3. Data Retention Supply Voltage in Stop Mode (TA = – 20 °C to + 85 °C) Parameter Symbol Conditions Min Typ Max Unit Data retention supply voltage VDDDR — 1.0 — 5.5 V Data retention supply current IDDDR — — 1 µA VDDDR = 1.0 V Stop mode IDLE MODE (Basic Timer active) STOP MODE NORMAL OPERATING MODE DATA RETENTION MODE V DD V DDDR EXT INT EXECUTION OF STOP INSTRUCTION 0.8 V DD 0.2 V DD tWAIT Figure 14-1. Stop Mode Release Timing When Initiated by an External Interrupt RESET OCCURS OSCILLATION STABILIZATION TIME STOP MODE NORMAL OPERATING MODE DATA RETENTION MODE VDD VDDDR EXECUTION OF STOP INSTRUCTION RESET Note : t WAIT is the same as 4096 x 16 x 1/f OSC t WAIT Figure 14-2. Stop Mode Release Timing When Initiated by a Reset 14-4 KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA Table 14-4. Input/Output Capacitance (TA = – 20°C to + 85°C, VDD = 0 V) Parameter Symbol Conditions Min Typ Max Unit Input capacitance CIN f = 1 MHz; unmeasured pins are connected to VSS — — 10 pF Output capacitance COUT Min Typ Max Unit P0.0–P0.7, P2.3–P2.0 VDD = 5 V 200 300 — ns Input VDD = 5 V 1000 — — I/O capacitance CIO Table 14-5. A.C. Electrical Characteristics (TA = – 20°C to + 85°C) Parameter Interrupt input, High, Low width RESET input Low width Symbol tINTH, tINTL tRSL Conditions tINTL tINTH 0.8 V DD 0.2 V DD NOTE: The unit t CPU means one CPU clock period. Figure 14-3. Input Timing for External Interrupts (Port 0, P2.3–P2.0) t RSL RESET 0.3 V DD Figure 14-4. Input Timing for RESET 14-5 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER Table 14-6. Oscillation Characteristics (TA = – 20°C + 85°C) Oscillator Crystal Clock Circuit C1 XIN Conditions Min Typ Max Unit CPU clock oscillation frequency 0.4 — 8 MHz CPU clock oscillation frequency 0.4 — 8 MHz XIN input frequency 0.4 — 8 MHz XOUT C2 Ceramic C1 XIN XOUT C2 External clock EXTERNAL CLOCK OPEN PIN XOUT KS88C0916 XIN Table 14-7. Oscillation Stabilization Time (TA = – 20°C + 85°C, VDD = 4.5 V to 5.5 V) Oscillator Test Condition Min Typ Max Unit Main crystal fOSC > 400 kHz — — 20 ms Main ceramic Oscillation stabilization occurs when VDD is equal to the minimum oscillator voltage range. — — 10 ms External clock (main system) XIN input High and Low width (tXH, tXL) 25 — 500 ns Oscillator stabilization wait time tWAIT when released by a reset (1) — 2 / fOSC — ms tWAIT when released by an interrupt (2) — — — ms 16 NOTES: 1. fOSC is the oscillator frequency. 2. The duration of the oscillation stabilization time (tWAIT) when it is released by an interrupt is determined by the setting in the basic timer control register, BTCON. 14-6 KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA F OSC (Main oscillation frequency) INSTRUCTION CLOCK C 1.33 MHz 8 MHz B 1.00 MHz 6 MHz A 670 kHz 4 MHz 500 kHz 250 kHz 400 kHz 8.32 kHz 1 2 3 4 5 6 7 SUPPLY VOLTAGE (V) INSTRUCTION CLOCK = 1/6n x oscillator frequency (n = 1, 2, 8, 16) A 2.0 V: 4 MHz, B 2.2 V: 6 MHz, C 2.4 V: 8 MHz Figure 14-5. Operating Voltage Range 14-7 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER 0 -1 -2 -3 VDD = 3V -4 IOH (mA) -5 -6 VDD = 4V -7 -8 VDD = 5V -9 -10 0 0.5 1 1.5 2 2.5 3 3.5 V OH (V) Figure 14-6. IOH vs. VOH (Port 0) 14-8 4 4.5 5 KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA 0 -1 -2 -3 VDD = 3V -4 IOH (mA) -5 -6 VDD = 4V -7 -8 VDD = 5V -9 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 V OH (V) Figure 14-7. IOH vs. VOH (Port 2) 14-9 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER 0 -4 -8 -12 VDD = 3V -16 IOH (mA) -20 -24 VDD = 4V -28 -32 VDD = 5V -36 -40 0 0.5 1 1.5 2 2.5 3 3.5 VOH (V) Figure 14-8. IOH vs. VOH (Port 3) 14-10 4 4.5 5 KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA 20 18 16 VDD = 5V 14 12 VDD = 4V IOL (mA) 10 8 VDD = 3V 6 4 2 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 V OL (V) Figure 14-9. IOL vs. VOL (Port 0) 14-11 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER 20 18 16 VDD = 5V 14 12 VDD = 4V IOL (mA) 10 8 VDD = 3V 6 4 2 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 V OL (V) Figure 14-10. IOL vs. VOL (Port 2) 14-12 2.4 2.7 3 KS88C0916/P0916 MICROCONTROLLER ELECTRICAL DATA 50 45 VDD = 5V 40 VDD = 4V 35 30 VDD = 3V IOL (mA) 25 20 15 10 5 0 0.35 0.7 1.05 1.4 1.75 2.1 2.45 2.8 3.15 3.5 V OL (V) Figure 14-11. IOL vs. VOL (Port 3) 14-13 ELECTRICAL DATA KS88C0916/P0916 MICROCONTROLLER NOTES 14-14 KS88C0916/P0916 MICROCONTROLLER 15 MECHANICAL DATA MECHANICAL DATA OVERVIEW The KS88C0916 microcontroller is currently available in a 32-pin SOP package. 0~8° #1 #16 11.43 32-SOP-450A 0.780.20 #17 8.340.2 12.000.3 #32 0.20 +0.10 (0.43) 0.40 0.1 1.27 2.40MAX 19.900.2 0.0MIN 2.00 0.2 - 0.05 0.10 MAX NOTE: Dimensions are in millimeters. Figure 15-1. 32-Pin SOP Package Mechanical Data 15-1 MECHANICAL DATA KS88C0916/P0916 MICROCONTROLLER #32 #17 27.48 0.2 0.45 0.10 (1.37) 1.00 0.10 1.778 0.0 5 5.08MAX 27.88 MAX 3.30 0.3 #16 3.80 0.2 #1 0.25 +0.1 10.16 32-SDIP-400 0.51MIN 9.10 0.20 0 15 ° NOTE: Dimensions are in millimeters. Figure 15-2. 32-Pin SDIP Package Mechanical Data 15-2