MC9S08LC60 Datasheet, PDF (126/358 Pages) Freescale Semiconductor, Inc – Microcontrollers

Liquid Crystal Display Driver (S08LCDV1)
Table 9-2. Modes of Operation (continued)
Mode
Stop3
Operation
Depending on the state of the LCDSTP3 bit, the LCD module can operate an LCD panel in stop3 mode.
If LCDSTP3 = 1, LCD module clock generation is turned off and the LCD module enters a power
conservation state.If LCDSTP3 = 0, the LCD module can operate an LCD panel in stop3, and the LCD
module continues to display the current LCD panel contents base on the LCDRAM registers.
If the LCD is enabled in stop3, the ICGERCLK must be selected as the clock source since the bus clock
is not available in stop3.
Wait
Depending on the configuration, the LCD module can operate an LCD panel in wait mode. If LCDWAI = 1,
the LCD module clock generation is turned off and the LCD module enters a power conservation state.If
LCDWAI = 0, the LCD module can operate an LCD panel in wait, and the LCD module continues to
display the current LCD panel contents base on the LCDRAM registers.
Blinking functionality remains active in wait or stop3 mode. If the MCU is in wait or stop3, the LCDRAM
registers cannot be changed. Stop3 provides the lowest power consumption state where the LCD module
is functional.
9.1.3 Block Diagram
Figure 9-2 is a block diagram of the LCD module.
LCD DIGITAL
IP
BUS
lcd_ipbus_interface
lcd_regs
LCD RAM
lcd_control
lcd_vgen
LCD
FP/BP DRIVER
lcd_clkgen
BASE
CLOCK
CONTROL CLOCK INPUT
LCD CHARGE PUMP
V_LL1
V_LL2
V_LL3
Figure 9-2. LCD Driver Block Diagram
MC9S08LC60 Series Advance Information Data Sheet, Rev. 2
126
PRELIMINARY
Freescale Semiconductor