AN454 AN554 AN654 Printed February 27, 1997 ST16C454/554/654 APPLICATION EXAMPLE Rev. 2.0 7-33 GND RST +5V IRQ9 -5V DRQ2 -12V OWS +12V GND SMEMW SMEMR IOW IOR DACK3 DRQ3 DACK1 DRQ1 REF CLK IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 DACK2 T/C BALE +5V OSC GND IOCK SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 IORDY AEN SA19 SA18 SA17 SA16 SA15 SA14 SA13 SA12 SA11 SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 7-38 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 IBMB JB1 IBMA JA1 VCC -12V +12V VCC 9 8 7 6 5 4 3 2 1 SAEN* SA9 SA8 SA7 SA6 SA5 SA4 SA3 GND IRQ5 IRQ4 IRQ3 IRQ7 +12V -12V VCC 9 8 7 6 5 4 3 2 SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 1 19 PAL16L8 I9 I8 I7 I6 I5 I4 I3 I2 I1 U1 74ALS245 A8 A7 A6 A5 A4 A3 A2 A1 DIR G 11 12 13 14 15 16 17 18 VCC I10 O1 IO2 IO3 IO4 IO5 IO6 IO7 O8 B8 B7 B6 B5 B4 B3 B2 B1 11 12 13 14 15 16 17 18 19 6 19 1 2 3 4 5 6 7 8 9 74LS245 G DIR A1 A2 A3 A4 A5 A6 A7 A8 U? 74LS13 U?A B1 B2 B3 B4 B5 B6 B7 B8 2 1 5 4 18 17 16 15 14 13 12 11 74LS13 U?B IRQEN IRQOUT 3F8 2F8 3E8 2E8 IRQIN 8 D7 D6 D5 D4 D3 D2 D1 D0 RESET SA2 SA1 SA0 IOW* IOR* 10 9 13 12 CS2* CS3* CS0* CS1* UARTS APPLICATION NOTE AN554 GND VCC IRQ3 IRQ4 IRQ5 IRQ7 RESET 3F8 2F8 3E8 2E8 IOR* IOW* SA0 SA1 SA2 D0 D1 D2 D3 D4 D5 D6 D7 VCC 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 HDR2X4 J6 HDR2X4 J5 HDR2X4 J4 HDR2X4 J2 HDR2X4 J3 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 RS1 10K-SIP HDR1X2 J7 INTA INTB INTC INTD 31 65 30 38 39 15 21 49 55 37 16 20 50 54 52 18 34 33 32 66 67 68 1 2 3 4 5 C1 22pF 7.3728 MHz X1 SEL 16/68 IRQSEL SEL CLOCK RXRDY TXRDY INTA INTB INTC INTD RESET CSA CSB CSC CSD IOR IOW A0 A1 A2 D0 D1 D2 D3 D4 D5 D6 D7 U4 ST16554CJ X1 35 C2 22pF RXD DSRD CTSD CDD RID TXD DTRD RTSD RXC DSRC CTSC CDC RIC TXC DTRC RTSC RXB DSRB CTSB CDB RIB TXB DTRB RTSB RXA DSRA CTSA CDA RIA TXA DTRA RTSA X2 36 7-39 63 60 59 61 62 53 58 56 41 44 45 43 42 51 46 48 29 26 25 27 28 19 24 22 7 10 11 9 8 17 12 14 RXD* DSRD* CTSD* CDD* RID* TXD* DTRD* RTSD* RXC* DSRC* CTSC* CDC* RIC* TXC* DTRC* RTSC* RXB* DSRB* CTSB* CDB* RIB* TXB* DTRB* RTSB* RXA* DSRA* CTSA* CDA* RIA* TXA* DTRA* RTSA* UARTS APPLICATION NOTE VCC AN554 TXA* RTSA* TXB* DTRA* RTSB* DTRB* 2 4 5 9 10 13 12 2 4 5 9 10 13 12 3 6 8 11 3 6 8 11 3 6 8 11 U5 INA1 INB1 INB2 INC2 INC1 IND1 IND2 MC1488CP U6 INA1 INB1 INB2 INC2 INC1 IND1 IND2 MC1488CP U9 OUTA OUTB OUTC OUTD MC1489CP U11 OUTA OUTB OUTC OUTD MC1489CP U10 OUTA OUTB OUTC OUTD C1489C VDD VSS OUTA OUTB OUTC OUTD VDD VSS OUTA OUTB OUTC OUTD INA C1 INB C2 INC C3 IND C4 INA C1 INB C2 INC C3 IND C4 INA C1 INB C2 INC C3 IND C4 14 3 6 8 11 1 14 3 6 8 11 1 1 2 4 5 10 9 13 12 1 2 4 5 10 9 13 12 1 2 4 5 10 9 13 12 +12V -12V +12V -12V TXD RTSD CTSD DSRD 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 1 6 2 7 3 8 4 9 5 J8 DB25RA/M J9 DB9RA/M +12V VCC -12V VCC +12V -12V GND 7-40 TXD* RTSD* RXA* CTSA* DSRA* CDA* RIA* CDB* DSRB* RXB* CTSB* RIB* CTSD* DSRD* UARTS APPLICATION NOTE AN554 7-41 -12V GND +12V VCC DSRC* RXD* CDD* RID* RXC* CDC* RIC* CTSC* DTRD* RTSC* TXC* DTRC* -12V VCC +12V 3 6 8 11 3 6 8 11 2 4 5 9 10 13 12 MC1489CP OUTA OUTB OUTC OUTD U8 MC1489CP OUTA OUTB OUTC OUTD U7 MC1488CP INA1 INB1 INB2 INC2 INC1 IND1 IND2 U4 VDD INA C1 INB C2 INC C3 IND C4 INA C1 INB C2 INC C3 IND C4 VSS OUTA OUTB OUTC OUTD 14 1 2 4 5 10 9 13 12 1 2 4 5 10 9 13 12 1 3 6 8 11 -12V RTSD TXD 1 3 5 7 9 1 3 5 7 9 HDR2X5 J7 HDR2X5 J6 2 4 6 8 10 2 4 6 8 10 DSRD CTSD UARTS APPLICATION NOTE +12V AN554 UARTS APPLICATION NOTE AN554 7-42