LUPA-4000 CYPRESS [Cypress Semiconductor], LUPA-4000 Datasheet - Page 24

• Manufacturer Part Number: LUPA-4000
• Description: 4M Pixel CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

The rise and fall times of the internal generated signals are not very fast (200nsec). In
fact they are made rather slow to limit the maximum current through the power supply
lines (Vmem_h, Vmem_l, Vres, Vres_ds, Vdd). Current limitation of those power
supplies is not required. Nevertheless, it is advisable to limit the currents not higher
than 400mA.
The power supply Vmem_l must be able to sink this current because it must be able to
discharge the internal capacitance from the level Vmem_h to the level Vmem_l. The
external control signals should be capable of driving input capacitance of about 10pF.
3.10.1 Digital signals
The digital signals control the readout of the image sensor. These signals are:
3.10.2 Test signals
The test structures implemented in this image sensor are:
• Sync_y (AH): Starts the readout of the frame. This pulse synchronises the y-
• Clock_y (AH): Clock of the y-register. On the rising edge of this clock, the
• Sync_x (AH): Starts the readout of the selected line at the address defined by
• Clock_x (AH): Determines the pixel rate. A clock of 33MHz is required to
• Spi_data (AH): the data for the SPI
• Spi_clock (AH): clock of the serial parallel interface. This clock downloads
• Spi_load (AH): when the SPI register is uploaded, then the data will be
• Sh_kol (AL): control signal of the column readout. Is used in sample & hold
• Norowsel (AH): Control signal of the column readout. (See timing)
• Pre_col (AL): Control signal of the column readout to reduce row blanking
• Voltage averaging (AH): Signal required obtaining voltage averaging of 2
• Array of pixels (6*12) which outputs are tied together: used for spectral
• Temperature diode (2): Apply a forward current of 10-100 µ A and measure the
• End of scan pulses (do not use to trigger other signals):
Contact:
Cypress Semiconductor Corporation
LUPA-4000
Data Sheet
address register: active high. This signal is at the same time the end of the
frame or window and determines the window width.
next line is selected.
the x-address register. This pulse synchronises the x-address register: active
high. This signal is at the same time the end of the line and determines the
window length.
achieve a pixel rate of 66MHz.
the data into the SPI register.
internally available on the rising edge of SPI_load
mode and in binning mode
time
pixels.
response measurement.
voltage V
with approximately 1,6 mV/°C).
[e-mail]
T
of the diode. V
Document #: 38-05712 Rev.**(Revision 1.2 )
T
3901 North First Street
varies linear with the temperature (V
San Jose, CA 95134
Page 24 of 49
T
decreases
408-943-2600