M37221M4H_15 Datasheet, PDF (91/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Memory Map of Special Function
Register (SFR)
■ SFR area (addresses C016 to DF16)
<Bit allocation>
:
: Name
Function bit
State immediately after reset>
0 ^{: “0” immediately after reset}
1 : “1” immediately after reset
: No function bit
0 ^{: Fix to this bit to “0”}
(do not write to “1”)
? : Indeterminate immediately
after reset
1 : Fix to this bit to “1”
(do not write to “0”)
Address
Register
Bit allocation
b7
State immediately after reset
b0 b7
b0
C016
C116
C216
C316
C416
Port P0 (P0)
Port P0 direction register (D0)
Port P1 (P1)
Port P1 direction register (D1)
Port P2 (P2)
?
001 6
?
0016
?
C516
C616
C716
C816
Port P2 direction register (D2)
Port P3 (P3)
Port P3 direction register (D3)
0016
0 00 ???? ?
0016
?
C916
CA16 Port P5 (P5)
CB16 Port P5 direction register (D5)
CC16
CD16 Port P3 output mode control register (P3S) (Note 1)
CE16 DA-H register (DA-H)
CF16 DA-L register (DA-L)
D016 PWM0 register (PWM0)
?
0 0 ? ?? ? ??
0016
?
DA2S DA1S P31S P30S
0016
?
0 0? ? ?? ? ?
?
D116 PWM1 register (PWM1)
?
D216 PWM2 register (PWM2)
?
D316 PWM3 register (PWM3)
?
D416 PWM4 register (PWM4)
?
D516 PWM output control register 1 (PW)
PW7 PW6 PW5 PW4 PW3 PW2 PW1 PW0
0016
D616 PWM output control register 2 (PN)
D716 I² C data shift register (S0)
D816 I² C address register (S0D)
PN4 PN3 PN2
SAD6 SAD5 SAD4 SAD3 SAD2 SAD1 SAD0 RBW
0016
?
0016
D916 I² C status register (S1)
MST TRX BB PIN AL AAS AD0 LRB 0 0 0 1 0 0 0 ?
DA16 I² C control register (S1D)
DB16 I² C clock control register (S2)
DC16 Serial I/O mode register (SM)
BSEL1 BSEL0 ^10BIT
SAD
ALS ES0 BC2 BC1 BC0
ACK
ACK
BIT
FAST
MODE
CCR4
CCR3
CCR2
CCR1
CCR0
SM6 SM5 ₀ SM3 SM2 SM1 SM0
0016
0016
0016
DD16 Serial I/O regsiter (SIO)
?
DE16 DA1 conversion register (DA1) (Note 2)
DF16 DA2 conversion register (DA2) (Note 2)
0 ^{DA15 DA14 DA13 DA12 DA11 DA10 0 0 ? ? ? ? ? ?}
0 ^{DA25 DA24 DA23 DA22 DA21 DA20 0 0 ? ? ? ? ? ?}
Note 1: As for M37221M4H/M6H/M8H/MAH-XXXSP/FP, fix bits 2 and 3 to “0.”
2: M37221M4H/M6H/M8H/MAH-XXXSP/FP do not have this register. Fix this register to “0016.”
Rev.1.00 Oct 01, 2002 page 89 of 110
REJ03B0134-0100Z