
ML51/ML54/ML56
Sep. 01, 2020
Page
237
of 719
Rev 2.00
ML
51
/ML
54
/ML
5
6 S
E
RI
E
S
TECHNI
CA
L
RE
F
E
R
E
NC
E
M
A
NU
A
L
ML51/M
L54
/M
L56
Series
Tec
hnical Reference
Manual
SCnETURD1
–SC ETU Rate Divider Register
Register
SFR Address
Reset Value
SC0ETURD1
DCH, Page 0
0011_0001 b
SC1ETURD1
DCH, Page 2
0011_0001 b
7
6
5
4
3
2
1
0
-
SCDIV[2:0]
ETURDIV[11:8]
-
R/W
R/W
Bit
Name
Description
[7]
-
Reserved
[6:4]
SCDIV[2:0]
SC Clock Divider
000 = F
SC
is F
SYS
/1.
001 = F
SC
is F
SYS
/2.
010 = F
SC
is F
SYS
/4.
011 = F
SC
is F
SYS
/8. (By default.)
100 = F
SC
is F
SYS
/16.
101 = F
SC
is F
SYS
/16.
110 = F
SC
is F
SYS
/16.
111 = F
SC
is F
SYS
/16.
Note:
that the F
SC
clock should be 1Mhz ~ 5Mhz for ISO/IEC 7816-3 standard
[3:0]
ETURDIV[11:8] MSB Bits of ETU Rate Divider
The field indicates the MSB of clock rate divider.
The real ETU is ETURDIV[11:0] + 1.
Note 1:
ETURDIV[11:0] must be greater than 0x004.
Note 2:
SCnETURD0 has to program first, then SCnETUDR1 .