HD6417727F100C Renesas Electronics America, HD6417727F100C Datasheet - Page 877

• Manufacturer Part Number: HD6417727F100C
• Description: IC SUPERH MPU ROMLESS 240QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100C

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

25.5
Note the following points when using the LCDC.
1. The following steps should be performed to prohibit access to the system memory used for
2. Notes on use of LCDC external clock
LCDC module display (synchronous DRAM in area 3).
(1) Confirm that bits LPS1 and LPS0 in the LDPMMR register are set to 1.
(2) Clear the DON bit in LDCNTR to 0 (display off mode).
(3) Confirm that bits LPS1 and LPS0 in LDPMMR are cleared to 0.
(4) Wait the display duration of one frame.
The above steps to prohibit access are necessary before entering standby mode or using the
LCDC module’s standby function.
When in clock mode 2 (crystal resonator used) and an external clock (LCLK) is used as the
LCD clock, changes in the state of the LCLK output pin can cause noise that affects the crystal
oscillator circuit, resulting in unstable PLL operation and possible malfunction.
In such a case, implement one of the following measures:
• Use an internal clock as the LCD clock when in clock mode 2.
• When using an external clock (LCLK) as the LCD clock, select a mode other than clock
mode 2 (external input on EXTAL pin).
Usage Notes
Rev.6.00 Mar. 27, 2009 Page 819 of 1036
Section 25 LCD Controller
REJ09B0254-0600