17-25
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
17.7.
Control Registers
T16B Ch.
n
Clock Control Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
T16B_
n
CLK
15
–
9
–
0x00
–
R
–
8
DBRUN
0
H0
R/W
7
–
4
CLKDIV[3:0]
0x0
H0
R/W
3
–
0
–
R
2
–
0
CLKSRC[2:0]
0x0
H0
R/W
Bits 15
–
9
Reserved
Bit 8
DBRUN
This bit sets whether the T16B Ch.n operating clock is supplied during debugging or not.
1 (R/W):
Clock supplied during debugging
0 (R/W):
No clock supplied during debugging
Bits 7
–
4
CLKDIV[3:0]
These bits select the division ratio of the T16B Ch.
n
operating clock (counter clock).
Bit 3
Reserved
Bits 2
–
0
CLKSRC[2:0]
These bits select the clock source of T16B Ch.
n
.
Table 17.7.1 Clock Source and Division Ratio Settings
T16B_
n
CLK.
CLKDIV[3:0] bits
T16B_
n
CLK.CLKSRC[2:0] bits
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
IOSC
OSC1
OSC3
EXOSC
EXCL
n
0
EXCL
n
1
EXCL
n
0
inverted
input
EXCL
n
1
inverted
input
0xf
1/32,768
1/1
1/32,768
1/1
1/1
1/1
1/1
1/1
0xe
1/16,384
1/16,384
0xd
1/8,192
1/8,192
0xc
1/4,096
1/4,096
0xb
1/2,048
1/2,048
0xa
1/1,024
1/1,024
0x9
1/512
1/512
0x8
1/256
1/256
1/256
0x7
1/128
1/128
1/128
0x6
1/64
1/64
1/64
0x5
1/32
1/32
1/32
0x4
1/16
1/16
1/16
0x3
1/8
1/8
1/8
0x2
1/4
1/4
1/4
0x1
1/2
1/2
1/2
0x0
1/1
1/1
1/1
(Note) The oscillator circuits/external inputs that are not supported in this IC cannot be selected as the clock source.
Summary of Contents for S1C31D50
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Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...