User Manual
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----2
Table of Contents
1. INTRODUCTION ................................................................................................................................................3
1.1 F
EATURES ...............................................................................................................................................................7
1.2 P
IN ASSIGNMENT ..................................................................................................................................................11
1.3 S
PECIFICATIONS ....................................................................................................................................................23
1.4 B
LOCK DIAGRAM ..................................................................................................................................................28
1.5 W
IRING DIAGRAMS FOR APPLICATIONS ................................................................................................................31
1.6 C
OMPARISON TABLE .............................................................................................................................................39
1.7 J
UMPER SETTINGS .................................................................................................................................................43
2. OPERATION PRINCIPLES.............................................................................................................................44
2.1 S
YSTEM MAPPING ................................................................................................................................................44
2.2 H
OW TO DEBUG PROGRAMS..................................................................................................................................48
2.3 H
OW TO DOWNLOAD PROGRAMS..........................................................................................................................49
2.4 U
SING THE DOWNLOAD_PORT AS COM PORT .......................................................................................................49
2.5 COM
PORTS COMPARISON....................................................................................................................................50
2.6 T
HE RS-485 PORT & SELF-TUNER ASIC..............................................................................................................53
2.7 U
SING THE RED LED & 7-SEG LED DISPLAY.....................................................................................................54
2.8 U
SING THE RTC & NVSRAM..............................................................................................................................54
2.9 U
SING EEPROM...................................................................................................................................................55
2.10 USING THE WATCHDOG TIMER .............................................................................................................................55
2.11 U
SING THE I/O EXPANSION BUS............................................................................................................................56
3. APPLICATIONS.................................................................................................................................................65
3.1 E
MBEDDED CONTROLLER .....................................................................................................................................65
3.2 A
DDRESSABLE RS-232 PROTOCOL CONVERTER ...................................................................................................66
3.3 L
OCAL REAL TIME CONTROLLER..........................................................................................................................67
3.4 R
EMOTE LOCAL CONTROLLER ..............................................................................................................................68
3.5 I/O E
XPANSION FOR PLC APPLICATIONS ..............................................................................................................69
3.6 R
ADIO MODEM APPLICATIONS..............................................................................................................................70
3.7 U
SING 4 COM PORT APPLICATION-1....................................................................................................................71