7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User’ s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
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1.6 Comparison Table
7188XA
4500
Module name
Embedded Controller
PC-Based Communication Controller
CPU
AMD 80188, 40M Hz
AMD 80188, 40M Hz
SRAM
512K
256K
Flash ROM
512K
256K
O.S.
MiniOS7
ROM-DOS
COM port
4
2+1 (one for download only)
COM2 isolated
Yes
No
Self-tuner inside
Yes, Com1&Com2
No
EEPROM
2048 bytes
No
7-Seg LED
5-digit (7188XAD)
No
I/O expansion bus
Yes
No
Support AsicKey
Yes
No
7521 series
4521
Module Name
Intelligent
Communication Controller
Addressable
RS-232 Converter
CPU
AMD 80188, 20M Hz
MC68HC705, 3.68M Hz (8-bit uP)
Number of RS-232 devices
able to handle
7521: 1 channel
7522: 2 channels
7523: 3 channels
1
D/I
7521: 3 channels
7522: 3 channels
7523: 2 channels
0
D/O
7521: 3 channels
7522: 1 channel
0
Built-in program
Yes
Yes
Program Download
Yes
No
Modify program
Yes
No
7-Seg LED
7521D, 7522D, 7523D
No
I/O expansion bus
7521 & 7521D
No
Support AsicKey
7521 & 7521D
No
Isolation Site
On RS-485 site
On RS-232 site
Functions
Flexible
Limited
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