PD17012_15 Datasheet, PDF (75/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
9.4 Notes on Using Data Buffer
Note the following points (1) through (3) concerning unused peripheral address and write-only peripheral
registers (PUT only) and read-only peripheral registers (GET only) when transferring data with the peripheral
hardware units via the data buffer.
(1) When a write-only register is read, an undefined value is read.
(2) Nothing is changed even if data is written to a read-only register.
(3) An undefined value is read if an unused register is read. Nothing is changed even if data is written to an unused
register.
Data Sheet U10101EJ4V0DS
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