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CubeSat Kit PPM B1 Rev. A

August 2009 – document Rev. B

PPM PIN DESCRIPTIONS

The PPM connector H1 connects the PPM to resources residing on the MB and to resources accessible

via the CubeSat Kit Bus connector.

Those signals that are connected directly to the PPM connector and to the CubeSat Kit Bus connectors

are tagged under the CSKB label below.

Signals marked with an ‘*’ are associated with dedicated

peripherals on the MB. They may also be used with off-board peripherals through the proper use of MB

peripheral enables and MB power control.

The potential for a pin’s function is described by the I/O field. The recommended usage (as a digital or

analog input or output, or as a power pin) is listed in the Description field. I/O pins can generally be

configured as general-purpose I/O if the recommended usage is not desired.

Inputs are signals from the MB to the PPM’s processor U1 or other circuitry. Outputs are signals from the

PPM’s processor U1 or other circuitry to the MB.

100

LSS-150-01-L-DV

IO.36

IO.37

IO.38

IO.39

IO.40

IO.41

IO.42

IO.43

IO.44

IO.45

IO.46

IO.47

IO.12

IO.13

IO.14

IO.15

IO.16

IO.17

IO.18

IO.19

IO.20

IO.21

IO.22

IO.23

IO.0

IO.1

IO.2

IO.3

IO.4

IO.5

IO.6

IO.7

IO.8

IO.9

IO.10

IO.11

* IO.24

IO.25

IO.26

IO.27

IO.28

IO.29

IO.30

IO.31

IO.32

IO.33

IO.34

IO.35

+5V_USB

+5V_SYS

VCC_SD

VCC

DGND

AGND

VBATT

VBACKUP

-FAULT_OC

SENSE

-RESET -->

<--

<--*

+5V_USB

+5V_SYS

VCC_SD

VCC

DGND

AGND

VBATT

VBACKUP

VREF0

VREF1

VREF2

-ON_SD

-ON_MHX

-OE_MHX

HS0

HS1

HS2

<--

-->

<--

-OE_USB/-INT

SDA_SYS

SCL_SYS

OFF_VCC

<--

<->

-->

HS3

HS4

HS5

-->

Not included. MBs are purchased separately from PPMs.

The CubeSat Kit’s system peripherals are numbered from 0 onwards (e.g., UART0, SPI0, etc.), and this nomenclature is used

when referring to a PPM or CSK bus signal. The C8051’s peripheral nomenclature begins with 0 (e.g., UART0, SMB0, etc.), and is

used when referring to peripherals, signals and registers internal to the C8051.

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