
CubeSat Kit PPM B1 Rev. A
© Pumpkin, Inc. 2003-2009
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August 2009 – document Rev. B
OPERATIONAL DESCRIPTION
PPM B1 enables CubeSat Kit customers to utilize the C8051 processor on a CubeSat Kit Motherboard
(MB). PPM B1 uses the 100-pin C8051F120-GQ, with a wide selection of on-chip peripherals.
Additionally, a 1Mbit external static RAM is present for off-chip storage.
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Value Units
Operating temperature T
A
-40 to +85 ºC
Operating temperature, C8051F120 alone T
A_MCU
-55 to +125 ºC
Voltage on +5V_USB bus
Voltage on +5V_SYS bus
Voltage on –FAULT_OC open-collector output
-0.3 to +6.0 V
Voltage on VCC bus
Voltage on VCC_SD bus
-0.3 to +3.6 V
Voltage on any processor pin except VDD and port I/O
-0.3 to
(VCC + 0.3)
V
Voltage on any processor VDD or port I/O pin
-0.3 to
+5.8V
V
Maximum current sourced or sunk by any processor port I/O pin 100 mA
DC current through any pin of PPM connector H1
I
PIN_MAX
1.2 A
Refer to the C8-51F120/1/2/3/4/5/6/7 family datasheet for additional absolute maximum ratings
associated with processor U1.
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