RELEASE
Revision B1
©Serious Integrated, Inc.
41
16-PIN POWER/COMMUNICATIONS CONNECTOR (J8)
A common way a SIM535 is connected to another system is via the
JST ZPD Series wire-to-board connector
. Relevant
part numbers are:
JST Part Number
Description
BM16B-ZPDSS-TF(LF)(SN)
Shrouded Header, SMT, 16 position (2x8), Vertical
ZPDR-16V-S
Wire Housing
SZPD-002T-P0.3
Crimp pin for AWG#24 to 28 stranded wire (see below)
This connector is identical to that found on all newer
Serious
modules, including the SIM115 and
SIM231. Older SIMS had the 7 position JST GH series (SM07B-GHS-TB), and customer feedback
indicated that more signals were desired, including
PWRDWN#
and the SPI port for higher speed
communications. In addition, higher power handling capability was need for larger modules including the SIM535.
SHIPEngine
v5 can use the UART or SPI on this connector with Modbus or the
Serious
SHIPBridge protocol to communicate
between the GUI and the attached system.
Some
Serious Communcations Modules (SCMs)
, for example the
Serious Communications Module 117 (SCM117)
include
RS232, RS485, CAN transceivers and more, and dock into the back of the SIM535 directly.
Pin
Schematic Net Name
Description
1
+VEXT
In5VDC power pin; see
Power Supplies
.
2
GND
System Ground; see
Power Supplies.
3
+3V3
Reg3.3VDC output from SIM; see
Power Supplies
.
4
PWRDWN#
Shutdown Input; see
Power Supplies.
5
RESET#
System RESET# input and/or output; pulled high on the module.
6
PE2/SCL1
I2C Clock (shared with I2C SIM devices)
7
DAC_OUT
GPIO or 3.3V p-p
DAC output
8
PE3/SDA1
I2C Data (shared with I2C SIM devices)
9
PJ14/TXD6-UART0_TX
UART TxD pin (3.3V).
10
PB20/MISO0
SPI Master In/Slave Out
11
PE6/RXD6-UART0_RX
UART RxD pin (3.3V).
12
PB19/MOSI0
SPI Master Out/Slave In
13
PJ31-TX_CONTROL
UART Tx Enable for half duplex or multi-drop transceivers.
14
PB17/RSPCK0
SPI Slave Clock
15
PJ22/IRQ2-PH5/AN5
IRQ input meaning “host SPI data ready”.
16
PJ12-PH1/AN1
SPI Slave Select
There is no legacy full-level RS232 port on the SIM535. However, a simple and very inexpensive adaptor (such as the
CircuitMonkey.com USB-Serial TTL Adapter
) can be easily attached to primary 3.3V UART Tx/Rx signals to enable full
serial-over-USB communications to a PC. Alternatively, a common RS232 chip (like the venerable
MAX232
or similar
device) can boost the 3.3V UART levels to traditional RS232 voltages.
The JST ZPD series is fully RoHS and UL94V-0 compliant. In addition, it supports full -40 to 85C operation.
While operational to -40C, take care with insertion/removal at low temperature; the housing will be more susceptible to
breakage.
The JST ZPD series data sheet indicates a minimum operational temperature of -25C. JST has provided
Serious
a quality and
reliability certification for this connector down to -40C. Contact
Serious
for a copy of this certification.
While the signal wires of the connector can be any size between AWG#24 and AWG#28, the two main power
connections
(+VEXT
,
GND
) should be sized according to the worst-case power requirements of the SIM, taking into
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