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S1C63466 TECHNICAL MANUAL EPSON 95

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (SVD Circuit)

4.13.5 Programming notes

(1) To obtain a stable detection result, the SVD circuit must be ON for at least l00 µsec. So, to obtain the

SVD detection result, follow the programming sequence below.

1. Set SVDON to "1"

2. Maintain for 100 µsec minimum

3. Set SVDON to "0"

4. Read SVDDT

(2) The SVD circuit should normally be turned OFF because SVD operation increase current consump-

tion.

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 143 144

S1C63466 1
CONTENTS 7
EPSON iii 9
1OUTLINE 11
1.2 Block Diagram 12
1.3 Pin Layout Diagram 13
1.4 Pin Description 15
1.5 Mask Option 16
CHAPTER 1: OUTLINE 17
2.1 Power Supply 19
2.2 Initial Reset 21
2.3 Test Terminal (TEST) 23
3 CPU, ROM, RAM 24
3.4 Data ROM 25
CHAPTER 4 26
ERIPHERAL 26
PERATION 26
∗2 Not set in the circuit 27
EPSON 19 29
EPSON 21 31
4.2 Watchdog Timer 32
4.2.4 Programming notes 33
4.3 Oscillation Circuit 34
(sound quality) 35
EPSON 27 37
4.3.7 Programming notes 38
4.4.2 Interrupt function 39
4.4.3 Mask option 40
EPSON 31 41
4.4.5 Programming notes 43
4.5.2 Mask option 44
4.5.3 High impedance control 45
4.5.4 Special output 45
•TOUT (R02) 46
• FOUT (R03) 46
EPSON 37 47
4.5.6 Programming notes 49
4.6.2 Mask option 51
4.6.6 I/O memory of I/O ports 53
(2) I/O port control 55
4.6.7 Programming notes 56
EPSON 47 57
4.7.3 Mask option 58
EPSON 49 59
4.7.5 Display memory 61
4.7.6 LCD contrast adjustment 62
EPSON 53 63
4.7.8 Programming notes 65
4.8 Clock Timer 66
4.8.3 Interrupt function 67
EPSON 59 69
4.8.5 Programming notes 70
4.9 Stopwatch Timer 71
4.9.3 Interrupt function 72
EPSON 63 73
4.9.5 Programming notes 74
4.10 Programmable Timer 75
4.10.3 Counter mode 77
(1) Selection of source clock 78
Timer 1 underflow 80
Source clock for serial I/F 80
EPSON 71 81
EPSON 73 83
EPSON 75 85
4.10.9 Programming notes 86
EPSON 77 87
4.11.2 Mask option 88
EPSON 79 89
SD3 SD2 SD1 SD0 90
SD4 SD5 SD6 SD7 90
SD7 SD6 SD5 SD4 90
SD0 SD1 SD2 SD3 90
(5) Timing chart 91
EPSON 83 93
SS) level 94
DD) level bit 94
4.11.6 Programming notes 95
4.12 Sound Generator 96
4.12.6 One-shot output 99
*2 Not set in the circuit 100
EPSON 91 101
4.12.8 Programming notes 102
Data bus 103
4.13.5 Programming notes 105
4.14 Interrupt and HALT 106
EPSON 97 107
4.14.1 Interrupt factor 108
EPSON 99 109
EPSON 101 111
4.14.5 Programming notes 112
5SUMMARY OF NOTES 113
Memory and stack 114
Watchdog timer 114
Oscillation circuit 114
Input port 115
Output port 115
I/O port 115
LCD driver 115
Clock timer 115
Stopwatch timer 116
Programmable timer 116
Serial interface 116
Sound generator 117
SVD circuit 117
Interrupt 117
7ELECTRICAL CHARACTERISTICS 119
7.3 DC Characteristics 120
CR oscillation frequency f 124
<Master mode> 125
<Slave mode> 125
2.5 msec min 126
5 msec min 126
CHAPTER 8PACKAGE 127
QFP17-144pin 128
QFP5-128pin 129
QFP8-144pin 130
CHAPTER 9PAD LAYOUT 133
CHAPTER 9: PAD LAYOUT 134
APPENDIX S5U1C63000P MANUAL 135
OSC1 rough adjustment 136
OSC1 fine adjustment 136
OSC3 rough adjustment 136
OSC3 fine adjustment 136
(7) RESET switch 137
(9) IOSEL2 137
(10) CLK and PRG switch 137
(11) VC5 137
I/O connection cable 138
To target board 138
A.3 Usage Precautions 140
(3) Functional precautions 141
First issue July, 1998 144

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