FUJITSU SEMICONDUCTOR DATA SHEET DS04-21342-1E ASSP Dual Serial Input PLL Frequency Synthesizer MB15F04 ■ DESCRIPTION The Fujitsu MB15F04 is a serial input Phase Locked Loop (PLL) frequency synthesizer with two 2.0GHz prescalers. A 64/65 or a 128/129 for both 2.0GHz prescalers can be selected that enables pulse swallow operation. The latest BiCMOS process technology is used, resuItantly a supply current is limited as low as 11.0mA typ. at a supply voltage of 3.0V. Furthermore, a super charger circuit is included to provide a fast tuning as well as low noise performance. As a result of this, MB15F04 is ideally suitable for digital mobile communications. ■ FEATURES • High frequency operation • • • • • • • ■ RX synthesizer : 2.0 GHz max. TX synthesizer : 2.0 GHz max. Low power supply voltage: VCC = 2.7 to 3.6 V Very Low power supply current : ICC = 11.0 mA typ. (Vcc = 3V) Power saving function : IPSTX = IPSTX = 10 µA max. Serial input 14–bit programmable reference divider: R = 5 to 16,383 Serial input 18–bit programmable divider consisting of: - Binary 7–bit swallow counter: 0 to 127 - Binary 11–bit programmable counter: 5 to 2,047 On–chip high performance charge pump circuit and phase comparator, achieving high–speed lock–up and low phase noise Wide operating temperature: Ta = −40 to 85°C PACKAGE 20-pin, Plastic SSOP (FPT-20P-M03) MB15F04 ■ PIN ASSIGNMENT (TOP VIEW) GNDRX1 1 20 Clock OSCIN 2 19 Data GNDTX 3 18 LE finTX 4 17 finRX VccTX 5 16 VccRX XfinTX 6 15 XfinRX BSCTX 7 14 LD/fout PSTX 8 13 PSRX DoTX 9 12 DoRFX BSTX 10 11 GNDRX2 (FPT-20P-M03) 2 MB15F04 ■ PIN DESCRIPTIONS Pin No. Pin name I/O 1 GNDRX1 – Ground for RX–PLL section. 2 OSCin I The programmable reference divider input. TCXO should be connected with a AC coupling capacitor. 3 GNDTX – Ground for the TX-PLL section. 4 finTX I Prescaler input pin for the TX-PLL. The connection with VCO should be AC coupling. 5 VccTX – Power supply voltage input pin for the TX-PLL section. When power is OFF, latched data of TX-PLL is cancelled. 6 XfinTX I Prescaler complimentary input for the TX-PLL section. This pin should be grounded via a capacitor. I Analog switch output (BSTX) control for the TX section. Always pull-down the BSCTX pin when not using BSTX. (Do not leave open.) BSCTX = “H”; outputs the DoTX state. BSCTX = “L” ; goes to high impedance. 7 BSCTX Descriptions 8 PSTX I Power saving mode control for the TX-PLL section. This pin must be set at “L” Power-ON. (Open is prohibited.) PSTX = “H” ; Normal mode PSTX= “L” ; Power saving mode 9 DoTX O Charge pump output for the TX-PLL section. Phase characteristics of the phase detector can be reversed by FC-bit. 10 BSTX O Analog switch output for the TX selection. 11 GNDRX2 – Ground 2 for the RX section. 12 DoRX O Charge pump output for the RX-PLL section. Phase characteristics of the phase detector can be reversed by FC-bit. 13 PSRX I Power saving mode control for the RX-PLL section. This pin must be set at “L” Power-ON. (Open is prohibited.) PSRX = “H” ; Normal mode PSRX = “L” ; Power saving mode 14 LD/fout O Lock detect signal output (LD) / phase comparator monitoring output (fout) The output signal is selected by a LDS bit in a serial data. LDS bit = “H” ; outputs fout signal LDS bit = “L” ; outputs LD signal 15 XfinRX I Prescaler complimentary input for the RX-PLL section. This pin should be grounded via a capacitor. 16 VccRX – Power supply voltage input pin for the RX-PLL section. When power is OFF, latched data of RX-PLL is cancelled. 17 finRX I Prescaler input pin for the RX-PLL. The connection with VCO should be AC coupling. 18 LE I Load enable signal input (with the schmitt trigger circuit.) When LE is “H”, data in the shift register is transferred to the corresponding latch according to the control bit in a serial data. 19 Data I Serial data input (with the schmitt trigger circuit.) A data is transferred to the corresponding latch (TX-ref counter, TX-Prog. counter, RX-ref. counter, RX-prog. counter) according to the control bit in a serial data. 20 Clock I Clock input for the 23-bit shift register (with the schmitt trigger circuit.) One bit data is shifted into the shift register on a rising edge of the clock. 3 MB15F04 ■ BLOCK DIAGRAM 8 PSTX 3-bit latch Intermittent mode control LDS SWTX FCTX (TX–PLL) 7-bit latch VccTX GNDTX 5 3 11-bit latch Binary 11-bit Binary 7-bit swallow counter programmable (TX–PLL) counter(TX–PLL) fpTX Phase comp. Charge Super pump charger (TX–PLL) (TX–PLL) 9 DoTX Prescaler finTX 4 XfinTX 6 (TX–PLL) 64/65, 128/129 2-bit latch T1 T2 Lock Det. 14-bit latch Binary 14–bit programmable ref. counter(TX–PLL) 10 BSTX Analog switch (TX–PLL) 7 BSCTX LDTX frTX 2 OSCin AND Selector LD frTX frRX fpTX fpRX OR frRX T1 T2 Binary 14-bit programmable ref. counter(RX–PLL) LDRX 2-bit latch finRX 17 15 XfinRF Lock Det. (RX–PLL) Prescaler (RX–PLL) 64/65, 128/129 LDS SWRX FCRX PSRF 13 14-bit latch Intermittent mode control LE 18 Schmitt circuit Data 19 Schmitt circuit Clock 20 Schmitt circuit Binary 7-bit swallow counter (RX–PLL) Binary 11-bit programmable counter(RX–PLL) Phase comp. 3-bit latch 7-bit latch Charge Super pump (RX–PLL) charger (RX–PLL) fpRX (RX–PLL) 11-bit latch Latch selector C N 1 C N 2 23-bit shift register 16 VCCRX 4 14 LD/fout 1 GNDRX1 11 GNDRX2 12 DoRX MB15F04 ■ ABSOLUTE MAXIMUM RATINGS (See WARNING) Parameter Symbol Rating Unit VCC –0.5 to +4.0 V Input voltage VI –0.5 to VCC +0.5 V Output voltage VO –0.5 to VCC +0.5 V Output current IO –10 to +10 mA TSTG –55 to +125 °C Power supply voltage Storage temperature Remark WARNING: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ■ RECOMMENDED OPERATING CONDITIONS Parameter Symbol Value Unit Note 3.6 V VCCTX = VCCRX – VCC V – +85 °C Min Typ Max VCC 2.7 3.0 Input voltage Vi GND Operating temperature Ta –40 Power supply voltage Handling Precautions • This device should be transported and stored in anti-static containers. • This is a static-sensitive device; take proper anti-ESD precautions. Ensure that personnel and equipment are properly grounded. Cover workbenches with grounded conductive mats. • Always turn the power supply off before inserting or removing the device from its socket. • Protect leads with a conductive sheet when handling or transporting PC boards with devices. 5 MB15F04 ■ ELECTRICAL CHARACTERISTICS (VCC = 2.7 V to 3.6 V, Ta = –40°C to +85°C) Parameter finTX finRX OSCin ICCTX ICCRX IPSTX IPSRX finTX*3 finRX*3 fOSC finTX VfinTX finRX VfinRX OSCin Data, Clock, LE PSTX, PSRX, BSCTX Data, Clock, LE, PSTX, PSRX, BSCTX VOSC VIH Power supply current*1 Power saving current*2 Operating frequency Input sensitivity Input voltage Input current OSCin LD/fout Output voltage High impedance cutoff current Output current 6 VIL TX RX PSTX =“L” PSTX/RX =“L” TX RX – TX–PLL, 50Ω load (See TEST CIRCUIT) RX–PLL, 50Ω load (See TEST CIRCUIT) – Schmitt trigger input Schmitt trigger input Min. – – – – 100 100 3 Value Typ. 5.0 6.0 0.1*2 0.1*2 – – – Max. – – 10 10 2000 2000 40 –10 – +2 dBm –10 – +2 dBm 500 VCCx0.7+0.4 – – VCC – mVp-p – – VCCx0.3–0.4 Unit mA µA MHz V – VCCx0.7 – – VIL – – – VCCx0.3 IIH*4 – –1.0 IL*4 – –1.0 – +1.0 IIH IIL*4 VOH – – VCC = 3.0V, IOH = –1.0 mA VCC = 3.0V, IOL = 1.0 mA VCC = 3.0V, IDOH = –1.0 mA VCC = 3.0V, IDOL = 1.0 mA VCC = 3.0V, VOFF = GND to VCC VCC = 3.0V VCC = 3.0V VCC = 3.0V, VDOH = 2.0V, Ta = +25°C VCC = 3.0V, VDOL = 1.0V, Ta = +25°C 0 –100 VCC–0.4 – – – – – +100 0 – 0.4 VCC–0.4 – – – – 0.4 – – 1.1 µA – 1.0 – – –1.0 – mA –11 – –6 V +1.0 µA I VOL VDOH DoTX/RX, BSTX IOFF LD/fout IOH*4 IOL DoIX, DoRX, BSTX Condition VIH DoIF, DoRF, BSTX Analog switch on BSTX resistance *1: *2: *3: *4: Symbol VDOL IDOH*4 IDOL RON – µA V V mA 8 – 15 – 50 – Ω Conditions ; fin TX/RX = 2000 MHz, fOSC = 12 MHz, VCCTX/RF = 3.0 V, Ta = +25°C, in locking state. Conditions ; VCCTX/RX = 3.0 V, fOSC = 12.8 MHz, Ta = +25°C AC coupling. The minimum operating frequency is specified with a coupling capacitor 1000 pF connected. The symbol “–” (minus) means direction of current flow. MB15F04 ■ FUNCTIONAL DESCRIPTIONS The divide ratio can be calculated using the following equation: fVCO = {(P x N) + A} x fOSC ÷ R fVCO: P: N: A: fOSC: R: (A < N) Output frequency of external voltage controlled ocillator (VCO) Preset divide ratio of dual modulus prescaler (64 or 128) Preset divide ratio of binary 11-bit programmable counter (5 to 2,047) Preset divide ratio of binary 7-bit swallow counter (0≤ A ≤ 127) Reference oscillation frequency Preset divide ratio of binary 14-bit programmable reference counter (5 to 16,383) Serial Data Input Serial data is entered using three pins, Data pin, Clock pin, and LE pin. Programmable dividers of TX/RX–PLL sections, programmable reference dividers of TX/RX PLL sections are controlled individually. Serial data of binary data is entered through Data pin. On rising edge of clock, one bit of serial data is transferred into the shift register. When load enable signal is high, the data stored in the shift register is transferred to one of latch of them depending upon the control bit data setting. Table1. Control Bit Control bit Destination of serial data CN1 CN2 L L The programmable reference counter for the TX-PLL. H L The programmable reference counter for the RX-PLL. L H The programmable counter and the swallow counter for the TX-PLL H H The programmable counter and the swallow counter for the RX-PLL Shift Register Configuration Programmable Reference Counter LSB MSB Data Flow 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 C N 1 C N 2 T 1 T 2 R 1 R 2 R 3 R 4 R 5 R 6 R 7 R 8 R 9 R 10 R 11 R 12 R 13 R 14 X X X X X CNT1, 2 : Control bit R1 to R14 : Divide ratio setting bits for the programmable reference counter (5 to 16,383) T1, 2 : Test purpose bit × : Dummy bit (set to either 0 or 1) NOTE: Data input with MSB first. [Table. 1] [Table. 2] [Table. 3] 7 MB15F04 Programmable Counter LSB MSB Data Flow 1 2 3 C N 1 C N 2 L D S 5 4 S F W C TX/ TX/ RX RX 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 A 1 A 2 A 3 A 4 A 5 A 6 A 7 N 1 N 2 N 3 N 4 N 5 N 6 N 7 N 8 N 9 N 10 N 11 CNT1, 2 N1 to N14 : Control bit : Divide ratio setting bits for the TX section or RX section programmable counter (5 to 2,047) A1 to A7 : Divide ratio setting bits for the TX section or RX section swallow counter (0 to 127) SWTX/RX : Divide ratio setting bit for the prescaler (TX section : SWTX, RX section: SWRX) FCTX/RX : Phase control bit for the phase detector (TX section : FCTX, RX section : FCRX) LDS : LD/fout signal select bit NOTE: Data input with MSB first. [Table. 1] [Table. 4] [Table. 5] [Table. 6] [Table. 7] [Table. 8] Table2. Binary 14-bit Programmable Reference Counter Data Setting Divide ratio (R) R 14 R 13 R 12 R 11 R 10 R 9 R 8 R 7 R 6 R 5 R 4 R 3 R 2 R 1 5 0 0 0 0 0 0 0 0 0 0 0 1 0 1 6 0 0 0 0 0 0 0 0 0 0 0 1 1 0 ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ 16383 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Note: Divide ratio less than 5 is prohibited. Table.3 Test Purpose Bit Setting 8 T 1 T 2 LD/fout pin state L L Outputs frTX H L Outputs frRX L H Outputs fpTX H H Outputs fpRX MB15F04 Table.4 Binary 11-bit Programmable Counter Data Setting Divide ratio (N) N 11 N 10 N 9 N 8 N 7 N 6 N 5 N 4 N 3 N 2 N 1 5 0 0 0 0 0 0 0 0 1 0 1 6 0 0 0 0 0 0 0 0 1 1 0 ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ 2047 1 1 1 1 1 1 1 1 1 1 1 Note: Divide ratio less than 5 is prohibited. Table.5 Binary 7-bit Swallow Counter Data Setting Divide ratio (A) A 7 A 6 A 5 A 4 A 3 A 2 A 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ 127 1 1 1 1 1 1 1 Note: Divide ratio (A) range = 0 to 127 Table. 6 Prescaler Data Setting Prescaler divide ratio SW = “H” SW = “L” TX-PLL 64/65 128/129 RX-PLL 64/65 128/129 9 MB15F04 Table. 7 Phase Comparator Phase Switching Data Setting FC = H FC = L fr > fp H L fr = fp Z Z fr < fp L H VCO polarity (1) (2) (1) VCO Output Frequency Note: • Z = High–impedance • Depending upon the VCO and LPF polarity, FC bit should be set. (2) VCO Output Voltage Table. 8 LD/fout Output Select Data Setting LDS LD/fout output signal H fout (frTX/RX, fpTX/RX) signals L LD signal Serial Data Input Timing 2nd. Data 1st. Data Control bit Data Invalid data LSB MSB Clock t1 LE t2 t5 t0 t4 t3 t6 On rising edge of the clock, one bit of the data is transferred into the shift register. Parameter 10 Min Typ Max Unit t1 20 – – ns t2 20 – – t3 30 – t4 20 – Parameter Min Typ Max Unit t5 30 – – ns ns t6 100 – – ns – ns t7 100 – – ns – ns MB15F04 ■ PHASE DETECTOR OUTPUT WAVEFORM frTX/RX fpTX/RX tWU tWL LD (FC bit = High) H DoTX/RX Z L (FC bit = Low) DoTX/RX Z LD Output Logic Table RX–PLL section LD output Locking state / Power saving state Locking state / Power saving state H Locking state / Power saving state Unlocking state L Unlocking state Locking state / Power saving state L Unlocking state Unlocking state L TX–PLL section Note: • Phase error detection range = −2π to +2π • Pulses on DoTX/RX signals are output to prevent dead zone. • LD output becomes low when phase error is tWU or more. • LD output becomes high when phase error is tWL or less and continues to be so for three cycles or more. • tWU and tWL depend on OSCin input frequency as follows. tWU > 8/fosc: i.e. tWU > 625ns when foscin = 12.8 MHz tWL < 16/fosc: i.e. tWL < 1250ns when foscin = 12.8 MHz 11 MB15F04 ■ POWER SAVING MODE (Intermittent Mode Control Circuit) Setting a PSTX(RX) pin to Low, TX-PLL (RX-PLL) enters into power saving mode resultant current consumption can be limited to 0.1 µA (typ.). Setting PS pin to High, power saving mode is released so that the device works normally. In addition, the intermittent operation control circuit is included which helps smooth start up from stand by mode. In general, the power consumption can be saved by the intermittent operation that powering down or waking up the synthesizer. Such case, if the PLL is powered up uncontrolled, the resulting phase comparator output signal is unpredictable due to an undefined phase relation between reference frequency (fr) and comparison frequency (fp) and may in the worst case take longer time for lock up of the loop. To prevent this, the intermittent operation control circuit enforces a limited error signal output of the phase detector during power up. Thus keeping the loop locked. PS pin must be set “L” at Power-ON. Allow 1 µs after frequency stabilization on power-up for exiting the power saving mode (PS: L to H) Serial data can be entered during the power saving mode. During the power saving mode, the corresponding section except for indispensable circuit for the power saving function stops working, then current consumption is reduced to 10µA per one PLL section. At that time, the Do and LD become the same state as when a loop is locking. That is, the Do becomes high impedance. A VCO control voltage is naturally kept at the locking voltage which defined by a LPF’s time constant. As a result of this, VCO’s frequency is kept at the locking frequency. 12 PSTX PSRX TX-PLL counters RX-PLL counters OSC input buffer L L OFF OFF OFF H L ON OFF ON L H OFF ON ON H H ON ON ON MB15F04 ■ ANALOG SWITCH (BSCTX Pin) The analog switch is set on or off by the BSCTX input. When the switch is on, the output of the charge pump (DoTX) is output from the BSTX pin. (The pin goes to high impedance when the switch is off.) Analog switch BSCTX ON H OFF L As in the example shown in the figure below, placing the analog switch midway through the LPF (LPF1 + LPF2) allows the LPF time constant to be reduced during PLL channel switching so as to speed up the lock up time. DoTX CHP LPF1 Analog swtch LPF2 VCO BSTX BSCTX 13 MB15F04 ■ TYPICAL CHARACTERISTICS Input sensivity of FIN (RX) vs. Input frequency 10 Ta = +25°C 5 Vfin RX (dBm) 0 –5 SPEC –10 –15 –20 –25 V CC=2.7 V V CC=3.0 V V CC=3.6 V –30 –35 –40 0 1000 2000 3000 4000 fin (MHz) Input sensivity of FIN (TX) vs. Input frequency 10 Ta = +25°C 5 0 SPEC Vfin TX (dBm) –5 –10 –15 –20 –25 V CC=2.7 V V CC=3.0 V V CC=3.6 V –30 –35 –40 0 1000 2000 3000 4000 fin (MHz) Input sensivity of OSC vs. Input frequency 10 Ta = +25°C SPEC 0 VOSC (dBm0) –10 –20 –30 –40 V CC=2.7 V V CC=3.0 V V CC=3.6 V –50 –60 0 10 50 100 fOSC (MHz) (Continued) 14 MB15F04 RX Do output current Conditions: Ta = +25°C IDOH – VDOH V CC = 3 V Ta = +25°C V DOH (V) 5.000 .0000 .0000 –25.00 I DOH (mA) IDOL – VDOL 5.000 V DOL (V) V CC = 3 V Ta = +25°C .0000 .0000 25.00 I DOL (mA) (Continued) 15 MB15F04 TX Do output current Conditions: Ta = +25°C IDOH – VDOH V CC = 3 V Ta = +25°C V DOH (V) 5.000 .0000 .0000 –25.00 I DOH (mA) IDOL – VDOL V CC = 3 V Ta = +25°C V DOL (V) 5.000 .0000 .0000 25.00 I DOL (mA) (Continued) 16 MB15F04 Input impedance fin 4 1; 9.7188 Ω –67.062 Ω 500 MHz 2; 8.2324 Ω –17.395 Ω 1 GHz 3; 11.075 Ω 6.2979 Ω 1.5 GHz 4; 12.635 Ω 23.558 Ω 2 GHz 1; 19.266 Ω –132.09 Ω 500 MHz 2; 9.6855 Ω –49.215 Ω 1 GHz 3; 11.299 Ω –13.364 Ω 1.5 GHz 4; 12.398 Ω 10.659 Ω 2 GHz 3 finRX Pin 2 1 START 100.000 000 MHz STOP 1 500.000 000 MHz fin finTX Pin 4 3 1 2 START 100.000 000 MHz STOP 1 500.000 000 MHz (Continued) 17 MB15F04 (Continued) Input impedance OSC IN 1; 28.862 k Ω –33.732 k Ω 1 MHz 2; 77 Ω –4.5602 k Ω 12.8 MHz 3; 114.63 Ω –2.5294 k Ω 23 MHz 3 4; 112.13 Ω –1.9848 k Ω 30 MHz OSCin Pin 2 4 START .500 000 MHz 18 STOP 100.000 000 MHz MB15F04 ■ TEST CIRCUIT (Prescaler Input/Programmable Reference Divider Input Sensitivity Test) 1000pF VccTX S.G 1000p 0.1µF S.G 50Ω 1000pF GND 10 50Ω 9 8 7 6 5 4 3 17 18 2 1 MB15F04 11 12 13 14 15 16 19 20 S.G 1000pF 50Ω VccRX Oscilloscope 1000 pF Controller (sets the divide ratios) 0.1µF 19 MB15F04 ■ APPLICATION EXAMPLE Low pass filter VCO Output from controller 3V 1000 pF 0.1µF 1000 pF 20 19 18 17 16 15 Lock Det. 14 13 12 11 7 8 9 10 MB15F04 1 2 3 4 5 6 1000 pF 3V 0.1µF TCXO 1000 pF 1000 pF Output VCO Low pass filter Clock, Data, LE: Schmitt trigger circuit is provided (insert a pull-down or pull-up resistor to prevent oscillation when open-circuited in the input). BSCTX : Always pull-down the BSCTX pin when not using the analog switch output (BSTX). (Do not leave the pin open.) 20 MB15F04 ■ ORDERING INFORMATION Part number Package MB15F04 PFV 20pin, Plastic SSOP (FPT-20P-M03) Remarks 21 MB15F04 ■ PACKAGE DIMENSION * : These dimensions do not include resin protrusion. 20 pins, Plastic SSOP (FPT-20P-M03) +0.20 * 6.50±0.10(.256±.004) 1.25 –0.10 +.008 .049 –.004 0.10(.004) INDEX *4.40±0.10 6.40±0.20 (.173±.004) (.252±.008) 0.65±0.12 (.0256±.0047) 5.85(.230)REF C 22 1994 FUJITSU LIMITED F20012S-2C-4 +0.10 0.22 –0.05 +.004 .009 –.002 "A" 5.40(.213) NOM +0.05 0.15 –0.02 +.002 .006 –.001 Details of "A" part 0.10±0.10(.004±.004) (STAND OFF) 0 10° 0.50±0.20 (.020±.008) Dimensions in mm (inches) MB15F04 FUJITSU LIMITED For further information please contact: Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-88, Japan Tel: (044) 754-3763 Fax: (044) 754-3329 North and South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street San Jose, CA 95134-1804, U.S.A. Tel: (408) 922-9000 Fax: (408) 432-9044/9045 Europe FUJITSU MIKROELEKTRONIK GmbH Am Siebenstein 6-10 63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122 Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE. LIMITED #05-08, 151 Lorong Chuan New Tech Park Singapore 556741 Tel: (65) 281-0770 Fax: (65) 281-0220 All Rights Reserved. Circuit diagrams utilizing Fujitsu products are included as a means of illustrating typical semiconductor applications. Complete information sufficient for construction purposes is not necessarily given. The information contained in this document has been carefully checked and is believed to be reliable. However, Fujitsu assumes no responsibility for inaccuracies. The information contained in this document does not convey any license under the copyrights, patent rights or trademarks claimed and owned by Fujitsu. Fujitsu reserves the right to change products or specifications without notice. No part of this publication may be copied or reproduced in any form or by any means, or transferred to any third party without prior written consent of Fujitsu. The information contained in this document are not intended for use with equipments which require extremely high reliability such as aerospace equipments, undersea repeaters, nuclear control systems or medical equipments for life support. F9703 FUJITSU LIMITED Printed in Japan 23