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CHAPTER 5 CPU ARCHITECTURE
Address Special-Function Register (SFR) Name Symbol R/W After Reset
FF00H Port0 P0 √√—
FF01H Port1 P1 √√—
FF02H Port2 P2 √√—
FF03H Port3 P3 √√—
FF04H Port4 P4 √√—
FF05H Port5 P5 √√— Undefined
FF06H Port6 P6 √√—
FF07H Port7 P7 √√—
FF0CH Port12 P12 √√—
FF0DH Port13 P13 √√—
FF10H
FF11H
FF12H
FF13H
FF14H
FF15H
FF16H Compare register 10 CR10 — √ —
FF17H Compare register 20 CR20 — √ —
FF18H 8-bit timer register 1 TM1 — √
FF19H 8-bit timer register 2 TM2 — √
FF1AH Serial I/O shift register 0 SIO0 — √ —
FF1BH Serial I/O shift register 1 SIO1 — √ — Undefined
FF1FH A/D conversion result register ADCR R — √ —
FF20H Port mode register 0 PM0 √√—
FF21H Port mode register 1 PM1 √√—
FF22H Port mode register 2 PM2 √√—
FF23H Port mode register 3 PM3 √√—
FF25H Port mode register 5 PM5 √√—
FF26H Port mode register 6 PM6 √√—
FF27H Port mode register 7 PM7 √√—
FF2CH Port mode register 12 PM12 √√—
FF2DH Port mode register 13 PM13 √√—
FF30H Real-time output buffer register L RTBL — √ —
FF31H Real-time output buffer register H RTBH — √ —
FF34H Real-time output port mode register RTPM √√—
FF36H Real-time output port control register RTPC √√—
Table 5-6. Special-Function Register List (1/3)
Manipulatable Bit Unit
8 bits
1 bit
16 bits
00H
R/W
Capture/compare register 01 CR01 — — √
Capture/compare register 00 CR00 — — √ Undefined
00H
16-bit timer register TM0 R — — √ 0000H
TMS
R/W Undefined
√R 00H
R/W
R/W FFH
00H