User Manual

Comparison table of 7522A, 7524 & 7527 series:
7522A(D) 7524(D) 7527(D)
CPU clock 80188, 40M Hz 80188, 40M Hz 80188, 40M Hz
SRAM 256K 256K 256K
Flash ROM 512K 512K 512K
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
RS-485 with self-tuner
inside
RS-485 wtih self-tuner
inside
COM3 RS-422/RS-485
(txd3-,rxd3+ ,
txd3+,rxd3-)
RS-232 (txd,rxd,rts,cts) RS-232 (txd,rxd)
COM4 No Com4 RS-232 (txd,rxd,rts,cts) RS-232 (txd,rxd)
COM5
No Com5 RS-232 (txd,rxd,rts,cts) RS-232 (txd,rxd)
COM6
No Com6 No Com6 RS-232 (txd,rxd)
COM7
No Com7 No Com7 RS-232 (txd,rxd)
COM8
No Com8 No Com8 RS-232 (txd,rxd)
RTC Yes Yes Yes
64 bits hardware
unique serial
number
Yes Yes Yes
EEPROM 2K bytes 2K bytes 2K bytes
D/I(3.5V~30V) 5 channels 1 channel 1 channel
D/O(100mA) 5 channels 1 channel 1 channel
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----41