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RoyalTek Confidential
2
RET-3570LP User Manual
1.3 Product Pictures and Interface board
(1) RET-3570LP
(2) RET-3570LP Interface board
The interface board pin definition
J2 CONNECTOR
Pin # Signal Name I/O Description Characteristics
1 N.C
2 N.C
3 Battery I
Backup voltage supply
10uACurrent
3.6V
~
2.5DC
≤
+
+
4 VCC I DC Supply Voltage input
DC +3.3V
±10%
5 Reset I Reset (Active low)
8.0 ; 2.3V V
IH
VV
IL
<
>
6-10 N.C
11 TXA O Serial port A
VVVVV
OLOH
715.0 85.2375.2 ≤
≤
≤
CMOS TTL level
12 RXA I Serial port A
VVVVV
ILIH
855.00.3V- 15.3995.1
≤
≤
≤
≤
CMOS TTL Level
13 N.C
14 TXB O Serial port B
VVVVV
OLOH
715.0 85.2375.2 ≤
≤
≤
CMOS TTL level
Pin 1