M16C26A Datasheet, PDF (316/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
19. Usage Notes
19. Usage Notes
19.1 SFR
19.1.1 Precaution for 48-pin package
Set the IFSR20 bit in the IFSR2A register to "1" after reset and set the PACR2 to PACR0 bits in the PACR
register to "1002".
19.1.2 Precaution for 42-pin package
Set the IFSR20 bit in the IFSR2A register to "1" after reset and set the PACR2 to PACR0 bits in the PACR
register to "0012".
19.1.3 Register Setting
Immediate values should be set in the registers containing write-only bits. When establishing a new value
by modifying a previous value, write the previous value into RAM as well as the register. Change the
contents of the RAM and then transfer the new value to the register.
Rev. 2.00 Feb.15, 2007 ^{page 299} of 329
REJ09B0202-0200