MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 20

• 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

MOTOROLA
STANDBY
8.0 Sensor External Controls (Additional
The MCM20027 includes initialization, standby modes,
and external reference voltage outputs to afford the
user additional applications flexibility.
8.1 Initialization
The INIT input pin (#1) controls reinitialization of the
MCM20027. This serves to assure controlled chip and
system startup. Control is asserted via a logic high in-
put. (i.e.. Asserting a Logic high “1” initializes all the
Registers, while asserting a Logic low “0” returns the
sensor to normal operation).
Initialization of the sensor is a synchronous process and
therefore requires that MCLK be running when the INIT
pin is pulsed. The INIT line must be pulsed for a mini-
mum of 8 MCLKs. After the INIT input has been pulsed,
normal chip processing and/or I
commence. This procedure ensures that the start-up
routines have run to completion. Tasks which are ac-
complished during startup include: reset of the utility
programming registers and initialization to their default
values (please refer
Registers” on page 32
counters and latches, and setup of the analog signal
processing chain.
The INIT pin can also be used as an alternative method
of saving power consumption. To enable this power
saving mode - the INIT input pin must be held “High”
continuously during the entire desired power saving du-
ration. Note-Doing this will cause initialization of the
chip. For more information please refer to
of the 3 Reset and Power saving Modes; Table 5
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
RESET
STATE
INIT
Mode
Operational Conditions)
Timing
Digital
Yes
Yes
Yes
Stop
to“MCM20027 Utility Programming
for settings), reset of all internal
Table 5. Comparison of the 3 Reset and Power saving Modes
Power Down
Analog
Blocks
Yes
Yes
No
2
Freescale Semiconductor, Inc.
C programming can
For More Information On This Product,
Registers
Reset
Yes
Comparison
No
No
I
2
Go to: www.freescale.com
C
I
2
possible
C Comm.
Yes
Yes
No
8.2 Standby Mode
The standby mode option is implemented to allow the
user to reduce system power consumption during peri-
ods which do not require operation of the MCM20027.
This feature allows the user to extend battery life in low
power applications.
By utilizing this mode, the user may reduce dynamic
power consumption from 250mW RMS nominal
@13.5MHz to <100 uW in the standby mode.
The standby mode is activated by writing a “1” to bit 0 of
“Power Configuration Register” on page
“0” restores normal operation. For more information
please refer to
saving Modes; Table 5
8.3 State Reset
The State Reset mode option is implemented to allow
the user to switch the sensor back to Initial (Reset) state
WITHOUT reseting the current I
ming. It can also be used to reduce system power con-
sumption during periods which do not require operation
of the MCM20027. This feature allows the user to ex-
tend battery life in low power applications.
By utilizing this mode, the user may reduce average
power consumption from 250mW RMS nominal
@13.5MHz to <100 uW in the standby mode.
The standby mode is activated by writing a “1” to bit 1 of
“Reset Control Register” on page
stores normal operation. For more information please
refer to
Modes; Table 5
image frame
image frame
Start of new
Start of new
Return State
Comparison of the 3 Reset and Power saving
Continue
current
frame
Comparison of the 3 Reset and Power
-Forces all digital outputs to
tristate
-Reset all I2C values to
default.
-No I2C progammability dur-
ing this mode.
-Returns to Start of 1st frame
after INIT is disserted.
-All I2C register values are
retained.
-All I2C registers can be pro-
grammed while in this mode.
-Returns to Start of first frame
after STATE RESET is dis-
serted.
-All I2C register values are
retained.
-All I2C registers can be pro-
grammed while in this mode.
-Returns the sensor to the
state it was in just prior to
STANDBY state being
asserted..
Revision 8.4 - 24 Oct 2002 :
Comment
2
ImageMOS
ImageMOS
C register program-
42. Writing a “0” re-
41. Writing a
Enable By
Asserting a logic
high to pin #42.
Writing a “1” to
bit 1 of
Control Regis-
ter” on page
Writing a “1” to
bit 0 of
Configuration
Register” on
page
41.
MCM20027
“Reset
“Power
42.
20