NXP Semiconductors MC9S08LG16, Reference Manual

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Chapter 8 LCD Module (S08LCDLPV1)
MC9S08LG32 MCU Series, Rev. 5
Freescale Semiconductor 165
9.3.3 LCD Voltage Supply Register (LCDSUPPLY)
Read: anytime
Write: anytime.
For proper operation, do not modify VSUPPLY[1:0] while the LCDEN bit is asserted. VSUPPLY[1:0]
must also be configured according to the external hardware power supply configuration.
Table 9-4. LCDC1 Field Descriptions
Field Description
7
LCDIEN
LCD Module Frame Frequency Interrupt Enable — Enables an LCD interrupt event that coincides with the
LCD module frame frequency.
0 No interrupt request is generated by this event.
1 The start of the LCD module frame causes an LCD module frame frequency interrupt request.
2
FCDEN
Full Complementary Drive Enable — This bit allows GPIO that are shared with LCD pins to operate as full
complementary if the other conditions necessary have been met. The other conditions are:
VSUPPLY = 11 and RVEN = 0.
0 GPIO shared with LCD operate as open drain outputs, input levels and internal pullup resistors are referenced
to V
DD
.
1 If VSUPPLY = 11 and RVEN = 0, GPIO shared with LCD operate as full complementary outputs. Input levels
and internal pullup resistors are referenced to V
LL3
.
1
LCDWAI
LCD Module Driver and Charge Pump Stop While in Wait Mode
0 Allows the LCD driver and charge pump to continue running during wait mode.
1 Disables the LCD driver and charge pump when MCU goes into wait mode.
0
LCDSTP
LCD Module Driver and Charge Pump Stop While in Stop2 or Stop3 Mode
0 Allows LCD module driver and charge pump to continue running during stop2 or stop3.
1 Disables LCD module driver and charge pump when MCU goes into stop2 or stop3.
Module Base + 0x0022
7 6 5 4 3 2 1 0
R
CPSEL HREFSEL LADJ1 LADJ0
0
BBYPASS VSUPPLY1 VSUPPLY0
W
Reset 0 0 1 1 0 1 0 1
Unimplemented or Reserved
Figure 9-5. LCD Voltage Supply Register (LCDSUPPLY)