MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 21

• Manufacturer Part Number: MCM20027IBMN
• Manufacturer: Freescale
• Type: CMOSr

Specifications of MCM20027IBMN

• Sensor Image Color Type: Monochrome
• Sensor Image Size Range: >= 480,000Pixels
• Sensor Image Size: 1280x1024Pixels
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 40C
• Package Type: CLCC
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Revision 8.4 - 24 Oct 2002:
8.4 Tristate Mode
The sensors HCLK, SOF, VCLK, SYNC and STROBE
output signals as well as the pixel output data can be
tristated via the
page
8.5 References CVREFP, CVREFM
The MCM20027 contains all internally generated refer-
ences and biases on-chip for system simplification. An
internally generated differential bandgap regulator de-
rives all the ADC and other analog signal processing re-
quired references. The user should connect 0.1 F
capacitors to the CVREFP and CVREFM pins (#15 and
#14 respectively) to accurately hold the biases.
8.6 Common Mode References: VAG, VAGREF and
The MCM20027 holds the Common Mode Reference
Voltages on the chip to a stable value. In order to
achieve this stable value, the VAG (pin #16),
VAGREF(pin #18 ) and VAGRETURN (pin #17) have to
be connected to two 0.1 F capacitors in the manner de-
scribed in the diagram below:
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
VAGRETURN
42.
VAGRETURN
VAGREF
(pin #16)
(pin #17)
(pin #18)
VAG
Tristate Control Register, (Table 23), on
MCM20027
Freescale Semiconductor, Inc.
For More Information On This Product,
0.1 F
0.1 F
Go to: www.freescale.com
8.7 Internal Bias Current Control
The ASP chain has internally generated bias currents
that result in an operating power consumption of nearly
400mW approx. (Accurate value will be given upon sen-
sor testing). By attaching a resistor between pin 20, EX-
TRES; and Pin19, the user can reduce the power
consumption of the device. This feature is enabled by
writing a 1
ter. Additional power savings can be achieved at lower
clock rates. Note - The External Bias resistor Input pin
(EXTRESP - pin #20) should be connected to the
ETRESRTN (pin#19) in the manner described in the di-
agram below.
EXTRESRTN
EXTRESP
(pin #20)
(pin #19)
b
to bit res of the
Power Configuration Regis-
ImageMOS
ImageMOS
Resistor
MOTOROLA
21