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R8C18 Datasheet(PDF) 33 Page - Renesas Technology Corp |
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R8C18 Datasheet(HTML) 33 Page - Renesas Technology Corp |
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33 / 257 page  R8C/18 Group, R8C/19 Group 4. Special Function Registers (SFRs) Rev.1.30 Apr 14, 2006 Page 18 of 233 REJ09B0222-0130 4. Special Function Registers (SFRs) An SFR (special function register) is a control register for a peripheral function. Tables 4.1 to 4.4 list the special function registers. Table 4.1 SFR Information (1)(1) X: Undefined NOTES: 1. The blank regions are reserved. Do not access locations in these regions. 2. Software reset, watchdog timer reset, and voltage monitor 2 reset do not affect this register. 3. After hardware reset. 4. After power-on reset or voltage monitor 1 reset. 5. Software reset, watchdog timer reset, and voltage monitor 2 reset do not affect b2 and b3. Address Register Symbol After reset 0000h 0001h 0002h 0003h 0004h Processor Mode Register 0 PM0 00h 0005h Processor Mode Register 1 PM1 00h 0006h System Clock Control Register 0 CM0 01101000b 0007h System Clock Control Register 1 CM1 00100000b 0008h 0009h Address Match Interrupt Enable Register AIER 00h 000Ah Protect Register PRCR 00h 000Bh 000Ch Oscillation Stop Detection Register OCD 00000100b 000Dh Watchdog Timer Reset Register WDTR XXh 000Eh Watchdog Timer Start Register WDTS XXh 000Fh Watchdog Timer Control Register WDC 00011111b 0010h Address Match Interrupt Register 0 RMAD0 00h 0011h 00h 0012h X0h 0013h 0014h Address Match Interrupt Register 1 RMAD1 00h 0015h 00h 0016h X0h 0017h 0018h 0019h 001Ah 001Bh 001Ch Count Source Protection Mode Register CSPR 00h 001Dh 001Eh INT0 Input Filter Select Register INT0F 00h 001Fh 0020h High-Speed On-Chip Oscillator Control Register 0 HRA0 00h 0021h High-Speed On-Chip Oscillator Control Register 1 HRA1 When shipping 0022h High-Speed On-Chip Oscillator Control Register 2 HRA2 00h 0023h 002Ah 002Bh 002Ch 002Dh 002Eh 002Fh 0030h 0031h Voltage Detection Register 1(2) VCA1 00001000b 0032h Voltage Detection Register 2(2) VCA2 00h(3) 01000000b(4) 0033h 0034h 0035h 0036h Voltage Monitor 1 Circuit Control Register (2) VW1C 0000X000b(3) 0100X001b(4) 0037h Voltage Monitor 2 Circuit Control Register (5) VW2C 00h 0038h 0039h 003Ah 003Bh 003Ch 003Dh 003Eh 003Fh |
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