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H8/3021 Datasheet(PDF) 83 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 83 Page - Renesas Technology Corp |
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83 / 712 page  3. MCU Operating Modes Rev.2.00 Mar. 22, 2007 Page 59 of 684 REJ09B0352-0200 3.2 Mode Control Register (MDCR) MDCR is an 8-bit read-only register that indicates the current operating mode of the H8/3022 Group. Bit Initial value Read/Write 7 — 1 — 6 — 1 — 5 — 0 — 4 — 0 — 3 — 0 — 0 MDS0 — R 2 MDS2 — R 1 MDS1 — R * * * Mode select 2 to 0 Bits indicating the current operating mode Reserved bits Note: Determined by pins MD to MD . 2 0 Bits 7 and 6—Reserved: These bits cannot be modified and are always read as 1. Bits 5 to 3—Reserved: These bits cannot be modified and are always read as 0. Bits 2 to 0—Mode Select 2 to 0 (MDS 2 to MDS0): These bits indicate the logic levels at pins MD 2 to MD0 (the current operating mode). MDS2 to MDS0 correspond to MD2 to MD0. MDS1 and MDS 0 are read-only bits. The mode pin (MD2 to MD0) levels are latched when MDCR is read. |
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