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Epson Research and Development
Vancouver Design Center
S1D13706
Interfacing to the Motorola MPC821 Microprocessor
X31B-G-009-02
Issue Date: 01/02/23
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
S1D13706. In a true 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 S1D13706.
Table 4-1: List of Connections from MPC821ADS to S1D13706
MPC821 Signal Name
MPC821ADS Connector and Pin Name
S1D13706 Signal Name
Vcc
P6-A1, P6-B1
COREVDD, HIOVDD,
NIOVDD
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