III PERIPHERAL BLOCK: INPUT/OUTPUT PORTS
B-III-9-2
EPSON
S1C33210 FUNCTION PART
Input-Port Pins
The input pins concurrently serve as the input pins for peripheral circuits, as shown in Table 9.1. Whether they are
used as input ports or for peripheral circuits can be set bit-for-bit using a function select register. All pins not used for
peripheral circuits can be used as general-purpose input ports that have an interrupt function.
Table 9.1 Input Pins
Pin name
I/O
Pull-up
Function
Function select bit
K50/#DMAREQ0
I
Available Input port / High-speed DMA request 0
CFK50(D0)/K5 function select register(0x402C0)
K51/#DMAREQ1
I
Available Input port / High-speed DMA request 1
CFK51(D1)/K5 function select register(0x402C0)
K52/#ADTRG
I
Available Input port / AD converter trigger
CFK52(D2)/K5 function select register(0x402C0)
K60/AD0
I
–
Input port / AD converter input 0
CFK60(D0)/K6 function select register(0x402C3)
K61/AD1
I
–
Input port / AD converter input 1
CFK61(D1)/K6 function select register(0x402C3)
K62/AD2
I
–
Input port / AD converter input 2
CFK62(D2)/K6 function select register(0x402C3)
K63/AD3
I
–
Input port / AD converter input 3
CFK63(D3)/K6 function select register(0x402C3)
At cold start, all pins are set for input ports Kxx (function select register CFKxx = "0"). When these pins are used for
the internal peripheral circuits, write "1" to CFKxx. For details on pin functions in this case, refer to the description
of each peripheral circuit in this manual.
At hot start, the pins retain their state from prior to the reset.
When the ports set for A/D converter input are read, the value obtained is always "0".
Notes on Use
The input buffers of the K60 to K63 ports use AV
DD
(power voltage for A/D converter) as their power source.
Therefore, the following precautions must be taken.
1) When using K60–K63 as general-purpose input ports, the voltage input to the port must be high level = AV
DD
and
low level = V
SS
.
2) When using V
DD
as high level similar to other ports, V
DD
must be the same voltage level as AV
DD
. If the input
V
DD
level is lower than the AV
DD
level, current flows in the input buffer, or if the input V
DD
level is higher than
the AV
DD
level, current flows from the V
DD
power supply to the AV
DD
power supply.
3) To fix the input level externally when the port is not used, the input pin should be connected to V
SS
or AV
DD
.
Summary of Contents for S1C33210
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Page 13: ...S1C33210 PRODUCT PART ...
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Page 124: ...APPENDIX B PIN CHARACTERISTICS A 110 EPSON S1C33210 PRODUCT PART THIS PAGE IS BLANK ...
Page 125: ...S1C33210 FUNCTION PART ...
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Page 127: ...S1C33210 FUNCTION PART I OUTLINE ...
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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 ...
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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 ...
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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 ...
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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 ...
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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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