Rabbit RCM3200 Manuel d'utilisateur Page 109
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
User’s Manual 103
APPENDIX D. POWER SUPPLY
Appendix D provides information on the current requirements
of the RCM3200, and includes some background on the chip
select circuit used in power management.
D.1 Power Supplies
The RCM3200 requires a regulated 3.3 V ± 0.15 V DC power source. The RabbitCore
design presumes that the voltage regulator is on the user board, and that the power is made
available to the RCM3200 board through header J2.
An RCM3200 with no loading at the outputs operating at 29.4 MHz typically draws 145 mA.
The RCM3200 will consume an additional 10 mA when the programming cable is used to
connect the programming header, J3, to a PC.
D.1.1 Battery-Backup Circuits
The RCM3200 does not have a battery, but there is provision for a customer-supplied bat-
tery to back up the data SRAM and keep the internal Rabbit 3000 real-time clock running.
Header J2, shown in Figure D-1, allows access to the external battery. This header makes
it possible to connect an external 3 V power supply. This allows the SRAM and the inter-
nal Rabbit 3000 real-time clock to retain data with the RCM3200 powered down.
Figure D-1. External Battery Connections
at Header J2
A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165
mA·h
is
recommended. A lithium battery is strongly recommended because of its nearly constant
nominal voltage over most of its life.
VRAM
+3.3V
30
31
29
32
VBAT_EXT
GND
External
Battery
J2
- RabbitCore RCM3200 1
- Rabbit Semiconductor Inc 2
- Trademarks 2
- TABLE OF CONTENTS 3
- Appendix D. Power Supply 103 5
- Notice to Users 115 5
- Index 117 5
- Schematics 121 5
- 1. INTRODUCTION 7
- Table 1. RCM3200 Features 8
- User’s Manual 3 9
- 1.4 How to Use This Manual 10
- 2. HARDWARE SETUP 11
- Do not press down 12
- PC COM port 13
- 8 RabbitCore RCM3200 14
- 2.3 Run a Sample Program 15
- 2.4 Where Do I Go From Here? 16
- 3. RUNNING SAMPLE PROGRAMS 17
- 3.2 Sample Programs 18
- User’s Manual 13 19
- 14 RabbitCore RCM3200 20
- 4. HARDWARE REFERENCE 21
- Headers J1 and J2 are 22
- Backup Battery 23
- 18 RabbitCore RCM3200 24
- User’s Manual 19 25
- 20 RabbitCore RCM3200 26
- User’s Manual 21 27
- 4.2 Serial Communication 28
- DIAG connector on 29
- LNK), one to 29
- ACT), and one to indicate 29
- 4.3 Serial Programming Cable 30
- 26 RabbitCore RCM3200 32
- 4.4 Other Hardware 33
- 4.5 Memory 34
- 5. SOFTWARE REFERENCE 35
- 30 RabbitCore RCM3200 36
- 5.2 Dynamic C Function Calls 37
- RS232.LIB 38
- PACKET.LIB 38
- User’s Manual 33 39
- RETURN VALUE 39
- 5.3 Upgrading Dynamic C 40
- 6. USING THE TCP/IP FEATURES 41
- 36 RabbitCore RCM3200 42
- User’s Manual 37 43
- 38 RabbitCore RCM3200 44
- User’s Manual 39 45
- 40 RabbitCore RCM3200 46
- User’s Manual 41 47
- 42 RabbitCore RCM3200 48
- User’s Manual 43 49
- User’s Manual 45 51
- 46 RabbitCore RCM3200 52
- 6.7 Where Do I Go From Here? 53
- 48 RabbitCore RCM3200 54
- User’s Manual 49 55
- Please refer to the RCM3200 56
- Exclusion 57
- 52 RabbitCore RCM3200 58
- User’s Manual 53 59
- A.2 Bus Loading 60
- I/O read and write cycles 61
- 56 RabbitCore RCM3200 62
- = –55°C to +125°C, V 63
- = 3.0 V to 3.6 V 63
- 58 RabbitCore RCM3200 64
- A.5 Conformal Coating 65
- A.6 Jumper Configurations 66
- PPENDIX B. PROTOTYPING BOARD 67
- B.1 Introduction 68
- User’s Manual 63 69
- 64 RabbitCore RCM3200 70
- User’s Manual 65 71
- B.3 Power Supply 72
- User’s Manual 67 73
- MEASUREMENT 74
- Connector Pinout 75
- Prototyping Board 76
- User’s Manual 71 77
- 72 RabbitCore RCM3200 78
- PPENDIX C. LCD/KEYPAD MODULE 79
- 74 RabbitCore RCM3200 80
- Contrast 81
- Adjustment 81
- C.3 Keypad Labeling 82
- C.4 Header Pinouts 83
- 78 RabbitCore RCM3200 84
- User’s Manual 79 85
- Bezel/Gasket 86
- User’s Manual 81 87
- C.7.3 LCD Display 89
- STDIO string functions 95
- C.7.4 Keypad 104
- library 104
- C.8 Sample Programs 107
- 102 RabbitCore RCM3200 108
- APPENDIX D. POWER SUPPLY 109
- 165 mA·h 110
- D.2 Optional +5 V Output 110
- E.1 Overview 111
- E.2 Header J6 112
- E.3 Using Parallel Port F 113
- 108 RabbitCore RCM3200 114
- Bits Value Description 115
- Table E-3. PWM Outputs 116
- E.5 PWM Registers 117
- E.6 Quadrature Decoder 118
- Rejected 118
- Accepted 118
- Peri Clock 118
- Timer A10 118
- User’s Manual 113 119
- 114 RabbitCore RCM3200 120
- NOTICE TO USERS 121
- 116 RabbitCore RCM3200 122
- User’s Manual 117 123
- 118 RabbitCore RCM3200 124
- User’s Manual 119 125
- 120 RabbitCore RCM3200 126
- SCHEMATICS 127
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