IV ANALOG BLOCK: A/D CONVERTER
B-IV-2-2
EPSON
S1C33L03 FUNCTION PART
I/O Pins of A/D Converter
Table 2.1 shows the pins used by the A/D converter.
Table 2.1 I/O Pins of A/D Converter
Pin name
I/O
Function
Function select bit
K52/#ADTRG
I
Input port / AD 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)
K64/AD4
I
Input port / AD converter input 4
CFK64(D4)/K6 function select register(0x402C3)
K65/AD5
I
Input port / AD converter input 5
CFK65(D5)/K6 function select register(0x402C3)
K66/AD6
I
Input port / AD converter input 6
CFK66(D6)/K6 function select register(0x402C3)
K67/AD7
I
Input port / AD converter input 7
CFK67(D7)/K6 function select register(0x402C3)
AV
DDE
–
Analog reference voltage (+)
–
AV
DDE
(analog power-supply pin)
AV
DDE
is the power-supply pin for the analog circuit. The voltage level supplied to this pin must be AV
DDE
= V
DDE
.
Note: When the A/D converter is set to enabled state, a current flows between AV
DDE
and V
SS
, and
power is consumed, even when A/D operations are not performed. Therefore, when the A/D
converter is not used, it must be set to the disabled state (default "0" setting of ADE (D2) in the
A/D enable register (0x40244)).
AD[7:0] (analog-signal input pins)
The analog input pins AD7 (Ch.7) through AD0 (Ch.0) are shared with input port pins K67 through K60.
Therefore, when these pins are used for analog input, they must be set for use with the A/D converter in the
software. This setting can be made individually for each pin. At cold start, all these pins are set for input
ports.
The analog input voltage AV
IN
can be input in the range of V
SS
≤
AV
IN
≤
AV
DDE
.
#ADTRG (external-trigger input pin)
This pin is used to input a trigger signal to start A/D conversion from an external source. Since this pin is
shared with input port K52, it must be set for use with the A/D converter in the software before an external
trigger can be applied to the pin. At cold start, this pin is set for an input port.
Method for setting A/D-converter input pins
At cold start, the #ADTRG and AD[7:0] pins all are set for input ports Kxx (function select bit CFKxx = "0").
When using these pins for the A/D converter, write "1" to the function select bit CFKxx.
At hot start, these pins retain their state from prior to the reset.
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
Page 4: ......
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Page 15: ...S1C33L03 PRODUCT PART ...
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Page 147: ...S1C33L03 FUNCTION PART ...
Page 148: ......
Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
Page 150: ......
Page 152: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 162: ...I OUTLINE LIST OF PINS B I 3 8 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 163: ...S1C33L03 FUNCTION PART II CORE BLOCK ...
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Page 166: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 172: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 176: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 224: ...II CORE BLOCK BCU Bus Control Unit B II 4 48 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 262: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 263: ...S1C33L03 FUNCTION PART III PERIPHERAL BLOCK ...
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Page 266: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 322: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
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Page 418: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 434: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
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Page 438: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 492: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 493: ...S1C33L03 FUNCTION PART VI SDRAM CONTROLLER BLOCK ...
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Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
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Page 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
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