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SH7021 Datasheet(PDF) 153 Page - Renesas Technology Corp

Part # SH7021
Description  SuperH??RISC engine
PDF  509 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7021 Datasheet(HTML) 153 Page - Renesas Technology Corp

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RENESAS 135
Table 8.9
Relationship between Multiplex Shift Count Bits (MXC1, MXC0) and Address
Multiplexing
Shift Amount 8 bits
Shift Amount 9 bits
Shift Amount 10 bits
Output Pin
Output
Row
Address
Output
Column
Address
Output
Row
Address
Output
Column
Address
Output
Row
Address
Output
Column
Address
A21
A21
A21
A21
A20
A20
A20
A20
A19
Undefined
A19
A19
A19
A18
Value
A18
Undefined
A18
A18
A17
A17
Value
A17
Undefined
A17
A16
A16
A16
Value
A16
A15
A23
A15
A15
A15
A14
A22
A14
A23
A14
A14
A13
A21
A13
A22
A13
A23
A13
A12
A20
A12
A21
A12
A22
A12
A11
A19
A11
A20
A11
A21
A11
A10
A18
A10
A19
A10
A20
A10
A9
A17
A9
A18
A9
A19
A9
A8
A16
A8
A17
A8
A18
A8
A7
A15
A7
A16
A7
A17
A7
A6
A14
A6
A15
A6
A16
A6
A5
A13
A5
A14
A5
A15
A5
A4
A12
A4
A13
A4
A14
A4
A3
A11
A3
A12
A3
A13
A3
A2
A10
A2
A11
A2
A12
A2
A1
A9
A1
A10
A1
A11
A1
A0
A8
A0
A9
A0
A10
A0
Notes: The MXC1=1, MX0=1 setting is reserved. Do not use it.
For example, when MXC1 and MXC0 are set to 00 and an 8-bit shift is selected, the A23–A8
address bit values are output to pins A15–A0 as row addresses. The values for A21–A16 are
undefined. The values of bits address A21–A0 are output to pins A21–A0 as column addresses.
Figure 8.16 depicts address multiplexing with an 8-bit shift.



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