Applied Data Systems Bitsy Plus, User Manual, Page: 22 / 68

Bitsy Plus User’s Manual
Page 12 ADS document # 110114-1001A
3.3.2 J2: PCMCIA
Integrated ejector: FCI #95620-050CA
The 68-pin PCMCIA socket conforms to the PCMCIA standard for 5V-tolerant Type II cards, and
can also be run at 3.3 V. The socket is normally de-energized; the operating system is responsible
for turning on the socket when a card is inserted and turning it off when the card is removed.
Ejector hardware is standard.
Vpp (pins 18 and 52), which is 12 V in older PCMCIA implementations, is left unconnected in
this implementation. See section 6.2.12 for electrical specifications.
3.3.3 J3: Power, I/O, Serial 2 & 3, USB, Touch Screen and others
Board Connector : Samtec #STMM-125-02-T-D
Recommended Mating Connector: Samtec # TCSD Series
Recommended Board-to-Board Connector: ESQT series (e.g. ESQT-125-02-F-D-500)
Pin Name Pin Type Description
1 EIO9 IO
EIO8 2 IO
3 EIO7 IO
Digital I/Os (6.2.7)
4
GND
6
P ground
8
VCC
10
PO +5 V
5
TEMP_SENSOR
_MINUS
AI
7
TEMP_SENSOR
_PLUS
PO
External Temperature Probe Connection
(4.3.5)
9 /IRDAON O External IRDA control output
11 TSPX AIO right UL
13 TSMY AIO top LR
15 TSMX AIO left LL
17 TSPY AIO bottom UR
Touch screen
(6.2.3)
EIO5 12 IO
EIO6 14 IO
Digital I/Os (6.2.7)
BACKLIGHT
PWM
16 AO
Backlight Intensity (PWM)
(4.6.6, 6.2.2)
/BACKLIGHT
ON
18 OC
Backlight On/Off
(open-collector) (4.6.6, 6.2.2)
19 RXD2T I
TXD2T 20 O
Serial 2
(3.3 V CMOS) (4.5.1)
21 WIPER AI Touch screen wiper (optional 5-wire touch)
CHARGE 22 O Charge Enable output (PB0
6
) (5.3.7)
23 GND P ground
PE2 24 O Power Enable #2 for external devices (5.3.2)
25 CTS3 I
TXD3 26 O
27 RTS3 O
RXD3 28 I
Serial 3
(RS-232) (4.5.1)
6
This output does not have any series resistance or ESD protection