HD6432633 Datasheet, PDF (1264/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

SMR0—Serial Mode Register 0
SMR1—Serial Mode Register 1
SMR2—Serial Mode Register 2
SMR3—Serial Mode Register 3
SMR4—Serial Mode Register 4
H'FF78
H'FF80
H'FF88
H'FDD0
H'FDD8
Bit
:7
C/A
Initial value : 0
R/W
: R/W
6
5
CHR
PE
0
0
R/W R/W
4
3
2
O/E STOP MP
0
0
0
R/W R/W R/W
1
CKS1
0
R/W
0
CKS0
0
R/W
SCI0
SCI1
SCI2
SCI3
SCI4
1210
Clock select 1 and 0
CKS1
0
1
CKS0
0
1
0
1
Description
ø clock
ø/4 clock
ø/16 clock
ø/64 clock
Multiprocessor mode
0 Multiprocessor function disabled
1 Multiprocessor format selected
Stop bit length
0 1 stop bit: In transmission, a single 1 bit (stop bit) is added to the
end of a transmit character before it is sent.
1 2 stop bits: In transmission, two 1 bits (stop bits) are added to the
end of a transmit character before it is sent.
Parity mode
0 Even parity*¹
1 Odd parity*²
Notes: *1 When even parity is set, parity bit addition is performed in transmission
so that the total number of 1 bits in the transmit character plus the parity
bit is even.
In reception, a check is performed to see if the total number of 1 bits in
the receive character plus the parity bit is even.
*2 When odd parity is set, parity bit addition is performed in transmission
so that the total number of 1 bits in the transmit character plus the
parity bit is odd.
In reception, a check is performed to see if the total number of 1 bits in
the receive character plus the parity bit is odd.
Parity enable
0 Parity bit addition and checking disabled
1 Parity bit addition and checking enabled*
Note: * When the PE bit is set to 1, the parity (even or odd) specified by the O/E bit is
added to transmit data before transmission. In reception, the parity bit is checked
for the parity (even or odd) specified by the O/E bit.
Character length
0 8-bit data
1 7-bit data*
Note: * When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted, and
it is not possible to choose between LSB-first or MSB-first transfer.
Communication mode
0 Asynchronous mode
1 Clocked synchronous mode