III PERIPHERAL BLOCK: PRESCALER
S1C33210 FUNCTION PART
EPSON
B-III-2-5
Name
Address
Register name
Bit
Function
Setting
Init.
R/W
Remarks
1 On
0 Off
P8TON3
P8TS32
P8TS31
P8TS30
P8TON2
P8TS22
P8TS21
P8TS20
D7
D6
D5
D4
D3
D2
D1
D0
8-bit timer 3 clock control
8-bit timer 3
clock division ratio selection
8-bit timer 2 clock control
8-bit timer 2
clock division ratio selection
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
θ
: selected by
Prescaler clock select
register (0x40181)
8-bit timer 3 can
generate the clock for
the serial I/F Ch.1.
θ
: selected by
Prescaler clock select
register (0x40181)
8-bit timer 2 can
generate the clock for
the serial I/F Ch.0.
004014E
(B)
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
P8TS3[2:0]
Division ratio
θ
/256
θ
/128
θ
/64
θ
/32
θ
/16
θ
/8
θ
/4
θ
/2
1 On
0 Off
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
P8TS2[2:0]
Division ratio
θ
/4096
θ
/2048
θ
/64
θ
/32
θ
/16
θ
/8
θ
/4
θ
/2
8-bit timer 2/3
clock control
register
–
PSONAD
PSAD2
PSAD1
PSAD0
D7–4
D3
D2
D1
D0
reserved
A/D converter clock control
A/D converter clock division ratio
selection
–
0
0
0
0
–
R/W
R/W
0 when being read.
θ
: selected by
Prescaler clock select
register (0x40181)
004014F
(B)
A/D clock
control register
1 On
0 Off
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
P8TS0[2:0]
Division ratio
θ
/256
θ
/128
θ
/64
θ
/32
θ
/16
θ
/8
θ
/4
θ
/2
–
CLKDT1
CLKDT0
PSCON
–
CLKCHG
SOSC3
SOSC1
D7
D6
D5
D4–3
D2
D1
D0
System clock division ratio
selection
Prescaler On/Off control
reserved
CPU operating clock switch
High-speed (OSC3) oscillation On/Off
Low-speed (OSC1) oscillation On/Off
1 On
0 Off
1 OSC3
0 OSC1
1 On
0 Off
1 On
0 Off
0
0
1
0
1
1
1
R/W
R/W
–
R/W
R/W
R/W
Writing 1 not allowed.
0040180
(B)
1
1
0
0
1
0
1
0
CLKDT[1:0]
Division ratio
1/8
1/4
1/2
1/1
–
Power control
register
–
PSCDT0
D7–1
D0
reserved
Prescaler clock selection
0
0
–
R/W
0040181
(B)
–
Prescaler clock
select register
1 OSC1
0 OSC3/PLL
Writing 10010110 (0x96)
removes the write protection of
the power control register
(0x40180) and the clock option
register (0x40190).
Writing another value set the
write protection.
CLGP7
CLGP6
CLGP5
CLGP4
CLGP3
CLGP2
CLGP1
CLGP0
D7
D6
D5
D4
D3
D2
D1
D0
Power control register protect flag
0
0
0
0
0
0
0
0
R/W
004019E
(B)
Power control
protect register
PSCON: Prescaler on/off control (D5) / Power control register (0x40180)
Turns the prescaler on or off.
Write "1": On
Write "0": Off
Read: Valid
The source clock is input to the prescaler by writing "1" to PSCON, thereby starting a dividing operation.
The prescaler is turned off by writing "0". If the peripheral circuits do not need to be operated, write "0" to this bit to
reduce current consumption. Since PSCON is protected against writing the same as SOSC1, SOSC3, CLKCHG and
CLKDT[1:0], CLGP[7:0] must be set to "0b10010110" before PSCON can be changed.
At initial reset, PSCON is set to "1" (On).
Note that when PSCON is set to "0" (Off), the source clock supplied to the prescaler is stopped. This means that
PSCON must not be set to "0" (Off) if any of the peripheral circuits (including the serial interface and ports) that use
the clock supplied to the prescaler are in use.
Summary of Contents for S1C33210
Page 4: ......
Page 13: ...S1C33210 PRODUCT PART ...
Page 14: ......
Page 124: ...APPENDIX B PIN CHARACTERISTICS A 110 EPSON S1C33210 PRODUCT PART THIS PAGE IS BLANK ...
Page 125: ...S1C33210 FUNCTION PART ...
Page 126: ......
Page 127: ...S1C33210 FUNCTION PART I OUTLINE ...
Page 128: ......
Page 130: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 138: ...I OUTLINE LIST OF PINS B I 3 6 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 139: ...S1C33210 FUNCTION PART II CORE BLOCK ...
Page 140: ......
Page 142: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 148: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 152: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 234: ...II CORE BLOCK CLG Clock Generator B II 6 10 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 236: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 237: ...S1C33210 FUNCTION PART III PERIPHERAL BLOCK ...
Page 238: ......
Page 240: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 296: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 429: ...S1C33210 FUNCTION PART IV ANALOG BLOCK ...
Page 430: ......
Page 432: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 448: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 449: ...S1C33210 FUNCTION PART V DMA BLOCK ...
Page 450: ......
Page 452: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 506: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 507: ...S1C33210 FUNCTION PART Appendix I O MAP ...
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