
aPPenDiX a liST OF i/O ReGiSTeRS
S1C17624/604/622/602/621 TeChniCal Manual
Seiko epson Corporation
aP-a-7
0x4220–0x4228
16-bit Timer Ch.0
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
T16 Ch.0 Count
Clock Select
Register
(T16_ClK0)
0x4220
(16 bits)
D15–4 –
reserved
–
–
–
0 when being read.
D3–0 DF[3:0]
Count clock division ratio select
DF[3:0]
Division ratio
0x0 R/W Source clock = PCLK
0xf
0xe
0xd
0xc
0xb
0xa
0x9
0x8
0x7
0x6
0x5
0x4
0x3
0x2
0x1
0x0
reserved
1/16384
1/8192
1/4096
1/2048
1/1024
1/512
1/256
1/128
1/64
1/32
1/16
1/8
1/4
1/2
1/1
T16 Ch.0
Reload Data
Register
(T16_TR0)
0x4222
(16 bits)
D15–0 TR[15:0]
Reload data
TR15 = MSB
TR0 = LSB
0x0 to 0xffff
0x0 R/W
T16 Ch.0
Counter Data
Register
(T16_TC0)
0x4224
(16 bits)
D15–0 TC[15:0]
Counter data
TC15 = MSB
TC0 = LSB
0x0 to 0xffff
0xffff
R
T16 Ch.0
Control Register
(T16_CTl0)
0x4226
(16 bits)
D15–11 –
reserved
–
–
–
0 when being read.
D10
CKaCTV
External clock active level select
1 High
0 Low
1
R/W
D9–8 CKSl[1:0] Operating mode select
CKSL[1:0]
Mode
0x0 R/W
0x3
0x2
0x1
0x0
reserved
Pulse width
External clock
Internal clock
D7–5 –
reserved
–
–
–
0 when being read.
D4
TRMD
Count mode select
1 One shot
0 Repeat
0
R/W
D3–2 –
reserved
–
–
–
0 when being read.
D1
PReSeR
Timer reset
1 Reset
0 Ignored
0
W
D0
PRun
Timer run/stop control
1 Run
0 Stop
0
R/W
T16 Ch.0
interrupt
Control Register
(T16_inT0)
0x4228
(16 bits)
D15–9 –
reserved
–
–
–
0 when being read.
D8
T16ie
T16 interrupt enable
1 Enable
0 Disable
0
R/W
D7–1 –
reserved
–
–
–
0 when being read.
D0
T16iF
T16 interrupt flag
1 Cause of
interrupt
occurred
0 Cause of
interrupt not
occurred
0
R/W Reset by writing 1.
0x4240–0x4248
16-bit Timer Ch.1
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
T16 Ch.1 Count
Clock Select
Register
(T16_ClK1)
0x4240
(16 bits)
D15–4 –
reserved
–
–
–
0 when being read.
D3–0 DF[3:0]
Count clock division ratio select
DF[3:0]
Division ratio
0x0 R/W Source clock = PCLK
0xf
0xe
0xd
0xc
0xb
0xa
0x9
0x8
0x7
0x6
0x5
0x4
0x3
0x2
0x1
0x0
reserved
1/16384
1/8192
1/4096
1/2048
1/1024
1/512
1/256
1/128
1/64
1/32
1/16
1/8
1/4
1/2
1/1
T16 Ch.1
Reload Data
Register
(T16_TR1)
0x4242
(16 bits)
D15–0 TR[15:0]
Reload data
TR15 = MSB
TR0 = LSB
0x0 to 0xffff
0x0 R/W
T16 Ch.1
Counter Data
Register
(T16_TC1)
0x4244
(16 bits)
D15–0 TC[15:0]
Counter data
TC15 = MSB
TC0 = LSB
0x0 to 0xffff
0xffff
R