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621
•
Bits 5 and 4—PB2 Mode (PB2MD1 and PB2MD0): PB2MD1 and PB2MD0 select the
function of the PB2/
IRQ0
/
POE0
/
RAS
pin.
Bit 5: PB2MD1
Bit 4: PB2MD0
Description
0
0
General input/output (PB2) (initial value)
1
Interrupt request input (
IRQ0
)
1
0
Port output enable (
POE0
)
1
Row address strobe (
RAS
) (PB2 in single chip mode)
•
Bit 3—Reserved: This bit always reads as 0. The write value should always be 0.
•
Bit 2—PB1 Mode (PB1MD): Selects the function of the PB1/A17 pin.
Bit 2: PB1MD
Description
0
General input/output (PB1) (initial value) (A17 in on-chip ROM invalid mode)
1
Address output (A17) (PB1 in single chip mode)
•
Bit 1—Reserved: This bit always reads as 0. The write value should always be 0.
•
Bit 0—PB0 Mode (PB0MD): Selects the function of the PB0/A16 pin.
Bit 0: PA0MD
Description
0
General input/output (PB0) (initial value) (A16 in on-chip ROM invalid mode)
1
Address output (A16) (PB0 in single chip mode)
Summary of Contents for SH7041 Series
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Page 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...