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2
Controller Board (AT89C5132)
2.10 RS232 Interface ( X13 )
Figure 2-6: Assignment of the RS232 Socket
2.11 LCD
The display area consist of a 2-line 20 characters LCD-display. The
contrast is adjustable using R3 variable resistor. The LCD is described
more detailed in the data sheet [2].
2.12 RTC
The V3022 is a low power CMOS real time clock with a built-in crystal. The
interface is 8 bits with multiplexed address and data bus. Multiplexing of
address and data is handled by the input line /D. The RTC is described
more detailed in the RTC user manual [3].
2.13 MMC
Multi Media Card is not supported.
14
Pin
1
2
1
3
6
2
4
7
5
3
8
6
4
9
7
5
8
9
Revision 1.00
Assignment
n.c.
TxD
RxD
n.c.
GND
n.c.
RTS
CTS
n.c.
VPC3+S Evaluation Kit
Copyright © profichip GmbH 2009
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