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Page 16 Epson Research and Development
Vancouver Design Center
S1D13708 Interfacing to the Motorola MPC821 Microprocessor
X39A-G-009-01 Issue Date: 01/11/06
Note
The interface was designed using a Motorola MPC821 Application Development
System (ADS). The ADS board has 5 volt logic connected to the data bus, so the
interface included two 74F245 octal buffers on D[0:15] between the ADS and the
S1D13708. In a true 3.3 volt system, no buffering is necessary.
4.2 MPC821ADS Evaluation Board Hardware Connections
The following table details the connections between the pins and signals of the MPC821
and the S1D13708.
Table 4-1: List of Connections from MPC821ADS to S1D13708
MPC821 Signal Name MPC821ADS Connector and Pin Name S1D13708 Signal Name
Vcc P6-A1, P6-B1 -
A15 P6-D20 A16
A16 P6-B24 A15
A17 P6-C24 A14
A18 P6-D23 A13
A19 P6-D22 A12
A20 P6-D19 A11
A21 P6-A19 A10
A22 P6-D28 A9
A23 P6-A28 A8
A24 P6-C27 A7
A25 P6-A26 A6
A26 P6-C26 A5
A27 P6-A25 A4
A28 P6-D26 A3
A29 P6-B25 A2
A30 P6-B19 A1
A31 P6-D17 A0
D0 P12-A9 D15
D1 P12-C9 D14
D2 P12-D9 D13
D3 P12-A8 D12
D4 P12-B8 D11
D5 P12-D8 D10
D6 P12-B7 D9
D7 P12-C7 D8
D8 P12-A15 D7
D9 P12-C15 D6
D10 P12-D15 D5
D11 P12-A14 D4