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PSD4235G2 Datasheet(PDF) 43 Page - STMicroelectronics |
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PSD4235G2 Datasheet(HTML) 43 Page - STMicroelectronics |
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43 / 89 page  43/89 PSD4235G2 Figure 21. Interfacing the PSD with an 80C196 80C196 and 80C186. In Figure 21, the Intel 80C196 MCU, which has a 16-bit multiplexed ad- dress/data bus, is shown connected to a PSD4235G2. The Read Strobe (RD, CNTL1), and Write Strobe (WR/WRL, CNTL0) signals are con- nected to the CNTL pins. When BHE is not used, the PSD can be configured to receive WRL and Write Enable High-byte (WRH/DBE, PD3) from the MCU. Higher address inputs (A16-A19) can be routed to Ports A, B, or C as input ot the PLD. The AMD 80186 family has the same bus connec- tion to the PSD as the 80C196. X1 X2 P1.0/EPA0/T2CLK P1.1/EPA1 P1.2/EPA2/T2DIR P1.3/EPA3 P1.4/EPA4 P1.5/EPA5 P1.6/EPA6 P1.7/EPA7 P3.0/AD0 P3.1/AD1 P3.2/AD2 P3.3/AD3 P3.4/AD4 P3.5/AD5 P3.6/AD6 P3.7/AD7 PF0 PF1 PF2 PF3 PF4 PF5 PF6 PF7 PG0 PG1 PG2 PG3 PG4 PG5 PG6 PG7 PA0 PA2 PA1 PA3 PA4 PA5 PA6 PA7 P4.0/AD8 P4.1/AD9 P4.2/AD10 P4.3/AD11 P4.4/AD12 P4.5/AD13 P4.6/AD14 P4.7/AD15 ADIO0 ADIO1 ADIO2 ADIO3 ADIO4 ADIO5 ADIO6 ADIO7 ADIO8 ADIO9 ADIO10 ADIO11 ADIO12 ADIO13 ADIO14 ADIO15 CNTL0 (WR) CNTL1 (RD) CNTL2 (BHE) PD0 (ALE) PD1 (CLKIN) PD2 (CSI) RESET RD/P5.3 WR/WRL/P5.2 BHE/WRH/P5.5 ALE/ADV/P5.0 INST/P5.1 SLPINT/P5.4 RESET 31 32 33 34 35 36 37 38 3 19 18 57 56 55 54 53 52 51 50 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 4 5 6 7 10 11 12 13 14 15 16 17 18 19 20 59 39 60 40 79 80 1 21 22 23 24 25 26 27 28 PSD 80C196NT A19-A16 A[ 19:16] 7 9 8 4 RD WR BHE ALE 3 1 RESET 51 52 53 54 55 56 57 58 AI04930 AD15-AD0 AD[ 15:0] PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PC0 PC2 PC1 PC3 PC4 PC5 PC6 PC7 61 62 63 64 65 66 67 68 41 42 43 44 45 46 47 48 PD3 (WRH) 2 PE0 (TMS) PE1 (TCK/ST) PE2 (TDI) PE3 (TDO) PE4 (TSTAT/RDY) PE5 (TERR) PE6 (VSTBY) PE7 (VBATON) 71 72 73 74 75 76 77 78 8 30495070 GND GND GND GND GND 929 69 VCC VCC VCC VCC AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 3 4 5 6 7 10 11 12 13 14 15 16 17 18 19 20 EP.0/A16 EP.1/A17 EP.2/A18 EP.3/A19 14 13 12 11 31 BUSWIDTH/P5.7 10 EA 33 RESET READY/P5.6 2 P2.0/TX/PVR P2.1/RXD/PALE P2.2/EXINT/PROG P2.3/INTB P2.4/INTINTOUT P2.5/HLD P2.6/HLDA/CPVER P2.7/CLKOUT/PAC 36 37 38 39 40 41 42 43 P6.0/EPA8 P6.1/EPA9 P6.2/T1CLK P6.3/T1DIR P6.4/SC0 P6.5/SD0 P6.6/SC1 P6.7/SD1 58 59 60 61 62 63 64 65 NMI VREF VPP ANGND ACH4/P0.4/PMD.0 ACH5/P0.5/PMD.1 ACH6/P0.6/PMD.2 ACH7/P0.7/PMD.3 32 49 6 48 44 45 46 47 A16 A17 A18 A19 A16 A17 A18 A19 |
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