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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Comparison table of 7521, 7522 & 7523 series:
7521(D)
7522(D)
7523(D)
CPU clock
80188, 20M Hz
80188, 20M Hz
80188, 20M Hz
SRAM
128K
128K
128K
Flash ROM
256K
256K
256K
COM1
RS-232
or RS-485 with
self-tuner inside
RS-232
or RS-485 with
self-tuner inside
RS-232
or RS-485 with
self-tuner inside
COM2
RS-485 with self-tuner
inside, 3000V isolation
RS-485 with self-tuner
inside, 3000V isolation
RS-485 wtih self-tuner
inside, 3000V isolation
COM3
No Com3
RS-232 (txd,rxd,rts,cts)
RS-232 (txd,rxd,rts,cts)
COM4
No Com4
No Com4
RS-232 (txd,rxd)
RTC
No
No
No
64
bits hardware
unique serial
number
No
No
No
EEPROM
2K bytes
2K bytes
2K bytes
D/I(3.5V~30V)
3 channels
3 channels
2 channels
D/O(150mA)
3 channels
1 channel
0
I/O expansion bus Yes
No
No
Support AsicKey
Yes
No
No
Operation system
MiniOS7
MiniOS7
MiniOS7
Programming
language
TC/MSC/BC
TC/MSC/BC
TC/MSC/BC
Program
download
COM1
COM1
COM1
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