R8C/20 Group, R8C/21 Group 4. Special Function Registers (SFRs)
Rev.2.00 Aug 27, 2008 Page 17 of 458
REJ09B0250-0200
Table 4.3 SFR Information (3)
(1)
X: Undefined
NOTES:
1. The blank regions are reserved. Do not access locations in these regions.
2. Selected by the IICSEL bit in the PMR register.
Address Register Symbol After reset
0080h
0081h
0082h
0083h
0084h
0085h
0086h
0087h
0088h
0089h
008Ah
008Bh
008Ch
008Dh
008Eh
008Fh
0090h
0091h
0092h
0093h
0094h
0095h
0096h
0097h
0098h
0099h
009Ah
009Bh
009Ch
009Dh
009Eh
009Fh
00A0h UART0 Transmit/Receive Mode Register U0MR 00h
00A1h UART0 Bit Rate Register U0BRG XXh
00A2h UART0 Transmit Buffer Register U0TB XXh
00A3h XXh
00A4h UART0 Transmit/Receive Control Register 0 U0C0 00001000b
00A5h UART0 Transmit/Receive Control Register 1 U0C1 00000010b
00A6h UART0 Receive Buffer Register U0RB XXh
00A7h XXh
00A8h UART1 Transmit/Receive Mode Register U1MR 00h
00A9h UART1 Bit Rate Register U1BRG XXh
00AAh UART1 Transmit Buffer Register U1TB XXh
00ABh XXh
00ACh UART1 Transmit/Receive Control Register 0 U1C0 00001000b
00ADh UART1 Transmit/Receive Control Register 1 U1C1 00000010b
00AEh UART1 Receive Buffer Register U1RB XXh
00AFh XXh
00B0h
00B1h
00B2h
00B3h
00B4h
00B5h
00B6h
00B7h
00B8h
SS Control Register H/IIC Bus Control Register 1
(2)
SSCRH/ICCR1 00h
00B9h
SS Control Register L/IIC Bus Control Register 2
(2)
SSCRL/ICCR2 01111101b
00BAh
SS Mode Register/IIC Bus Mode Register 1
(2)
SSMR/ICMR 00011000b
00BBh
SS Enable Register/IIC Bus Interrupt Enable Register
(2)
SSER/ICIER 00h
00BCh
SS Status Register/IIC Bus Status Register
(2)
SSSR/ICSR 00h/0000X000b
00BDh
SS Mode Register 2/Slave Address Register
(2)
SSMR2/SAR 00h
00BEh
SS Transmit Data Register/IIC Bus Transmit Data Register
(2)
SSTDR/ICDRT FFh
00BFh
SS Receive Data Register/IIC Bus Receive Data Register
(2)
SSRDR/ICDRR FFh
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