User`s manual

Hardware Description and Board Operation

MOTOROLA M68EZ328ADS v2.0 USER’S MANUAL 3-26

3.13 POWER SUPPLY

There are two power input connectors on the ADS, P1 and P2. P1 is designed for external

3V DC main power supply, which supplies power to the MC68EZ328 processor and most of

the on-board components. P2 is used for LCD driver (VEE) power supply. If an LCD panel

Table 3-7. Pin Assignments of P4

Pin# A B C

1 GND GND GND

2 D0/PA0 D1/PA1 D2/PA2

3 D3/PA3 D4/PA4 D5/PA5

4 D6/PA6 D7/PA7 D8

5 D9 D10 D11

6 D12 D13 D14

7 D15 CSA0 PF7/CSA1

8 PB0/CSB0 PB1/CSB1 PB2/CSC0/RAS0

9 PB3/CSC1/RAS1 PB4/CSD0/CAS0 PB5/CSD1/CAS1

10 PB6/TOUT/TIN PB7/PWMO1 PC0/LD0

11 PC1/LD1 PC2/LD2 PC3/LD3

12 PC4/LFRM PC5/LLP PC6/LCLK

13 PC7/LACD PD0/INT0 PD1/INT1

14 PD2/INT2 PD3/INT3 PD4/IRQ1

15 PD5/IRQ2 PD6/IRQ3 PD7/IRQ6

16 PE0/SPMTXD PE1/SPMRXD PE2/SPMCLK

17 PE3/DWE/UCLK PE4/RXD PE5/TXD

18 PE6/RTS PE7/CTS PF0/LCONTRAST

19 PF1/IRQ5 PF2/CLKO PG1/A0

20 MA0/A1 MA1/A2 MA2/A3

21 MA3/A4 MA4/A5 MA5/A6

22 MA6/A7 MA7/A8 MA8/A9

23 MA9/A10 MA10/A11 MA11/A12

24 MA12/A13 MA13/A14 MA14/A15

25 MA15/A16 A17 A18

26 A19 PF3/A20 PF4/A21

27 PF5/A22 PF6/A23 PG2/EMUIRQ

28 PG3/HIZ/P/D PG4/EMUCS PG5/EMUBRK

29 PG0/BUSW/DTACK RESET OE

30 UWE LWE PK2/LDS

31 PK3/UDS PK1/R/W NC

32 VCC VCC VCC

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