S1D13706F00A200 Epson, S1D13706F00A200 Datasheet - Page 146

• Manufacturer Part Number: S1D13706F00A200
• Description: LCD Drivers (QVGA) 320x240 LCD Controller @ 8bpp
• Manufacturer: Epson

Specifications of S1D13706F00A200

• Maximum Clock Frequency: 33 MHz
• Operating Supply Voltage: 1.8 V to 2.2 V, 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFP-100
• Attached Touch Screen: No
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Page 146
15 Power Save Mode
S1D13706
X31B-A-001-10
Note
A software initiated Power Save Mode is incorporated into the S1D13706 to accommodate
the need for power reduction in the hand-held devices market. This mode is enabled via the
Power Save Mode Enable bit (REG[A0h] bit 0).
Software Power Save Mode saves power by powering down the panel and stopping display
refresh accesses to the display buffer.
After reset, the S1D13706 is always in Power Save Mode. Software must initialize the chip
(i.e. programs all registers) and then clear the Power Save Mode Enable bit.
1
status of the memory controller is indicated by the Memory Controller Power Save Sta-
tus bit (REG[A0h] bit 3). However, memory writes are possible during power save
mode because the S1D13706 dynamically enables the memory controller for display
buffer writes.
2
rising edge of RESET#. For information on CNF3, see Table 4-7: “Summary of Power-
On/Reset Options,” on page 25.
3
When power save mode is enabled, the memory controller is powered down and the
GPIO Pins are configured using the configuration pin CNF3 which is latched on the
GPIOs can be accessed and if configured as outputs can be changed.
GPIO Pins configured as GPIOs Access Possible?
Look-Up Table Registers Access Possible?
GPIO Pins configured for HR-TFT/D-TFD
Sequence Controller Running?
Memory Writes Possible?
Memory Reads Possible?
Table 15-1: Power Save Mode Function Summary
IO Access Possible?
LCD I/F Outputs
Display Active?
PWMCLK
Revision 10.3
2
2
Power Save
Forced Low
Forced Low
Software
Stopped
Epson Research and Development
Yes
Yes
Yes
No
Yes
Hardware Functional Specification
No
No
1
1
3
Vancouver Design Center
Issue Date: 2008/12/16
Normal
Active
Active
Active
Yes
Yes
Yes
Yes
Yes
Yes
Yes