LCD Driver (LCD64F6B)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor
819
the lower power consuming clock of both as reference clock for the prescaler input can save power
consumption.
22.5.9.2
Boost at switching
Since the LCD appears like a capacitance to the driver it is sometimes useful to boost the output current
during transitions to increase the slew rate of the driver. If boosting is enabled, the drive strength capability
is increased a little ahead in time when the planes are switching, and reduced again to normal drive after
a certain time. To enable the boosting BSTEN need to be set. If BSTEN is not set, standard drive strength
is used.
Using the BST bit if BSTEN is set, LCD output current magnification (boost) can be selected. Available
is 8 times boosting, when BST is deasserted and 16 times boosting when BST is asserted.
The selected boost via BST bit can be switched to be always on by setting BSTAO, if BSTEN is set.
22.5.9.3
Standard drive selection
The output current has a direct impact on the power consumption and drive capability of the LCD64F6B
module. The PWR bits select the output current height and can be used to influence power consumption
and drive strength.
lists the possible selections of PWR.
22.5.9.4
Usage recommendation
It is recommended to start with maximum output current and maximum enabled boosting. As long as the
LCD is fully functional in all environments a reduction of Output Current and boosting can be done.
When reducing the Output Current (PWR), the power consumption of the LCD module and the maximum
switching current of the planes is reduced.
When reducing or disabling the boosting (BST,BSTEN), the output current, while planes are switching, is
reduced.
The user can select any combination of PWR, BST, BSTEN, BSTAO to what fit his needs best.
gives an overview what is the impact when taking advance of Boost at switching and
Table 22-30. Output Current Selection (PWR)
PWR
Current
00
Standard Current
01
2 * Standard Current
10
3 * Standard Current
11
4 * Standard Current
Содержание MPC5602S
Страница 76: ...Overview MPC5606S Microcontroller Reference Manual Rev 7 74 Freescale Semiconductor...
Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
Страница 112: ...Signal Description MPC5606S Microcontroller Reference Manual Rev 7 110 Freescale Semiconductor...
Страница 166: ...Analog to Digital Converter ADC MPC5606S Microcontroller Reference Manual Rev 7 164 Freescale Semiconductor...
Страница 182: ...Boot Assist Module BAM MPC5606S Microcontroller Reference Manual Rev 7 180 Freescale Semiconductor...
Страница 234: ...Clock Description MPC5606S Microcontroller Reference Manual Rev 7 232 Freescale Semiconductor...
Страница 286: ...Crossbar Switch XBAR MPC5606S Microcontroller Reference Manual Rev 7 284 Freescale Semiconductor...
Страница 470: ...e200z0h Core MPC5606S Microcontroller Reference Manual Rev 7 468 Freescale Semiconductor...
Страница 524: ...Enhanced Direct Memory Access eDMA MPC5606S Microcontroller Reference Manual Rev 7 522 Freescale Semiconductor...
Страница 546: ...Error Correction Status Module ECSM MPC5606S Microcontroller Reference Manual Rev 7 544 Freescale Semiconductor...
Страница 669: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 667...
Страница 670: ...Flash Memory MPC5606S Microcontroller Reference Manual Rev 7 668 Freescale Semiconductor...
Страница 716: ...FlexCAN MPC5606S Microcontroller Reference Manual Rev 7 714 Freescale Semiconductor...
Страница 882: ...LIN Controller LINFlex MPC5606S Microcontroller Reference Manual Rev 7 880 Freescale Semiconductor...
Страница 901: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 899...
Страница 902: ...Memory Protection Unit MPU MPC5606S Microcontroller Reference Manual Rev 7 900 Freescale Semiconductor...
Страница 955: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 953...
Страница 956: ...Mode Entry Module MC_ME MPC5606S Microcontroller Reference Manual Rev 7 954 Freescale Semiconductor...
Страница 1072: ...Quad Serial Peripheral Interface QuadSPI MPC5606S Microcontroller Reference Manual Rev 7 1070 Freescale Semiconductor...
Страница 1096: ...Reset Generation Module MC_RGM MPC5606S Microcontroller Reference Manual Rev 7 1094 Freescale Semiconductor...
Страница 1106: ...Real Time Clock RTC API MPC5606S Microcontroller Reference Manual Rev 7 1104 Freescale Semiconductor...
Страница 1186: ...Stepper Stall Detect SSD MPC5606S Microcontroller Reference Manual Rev 7 1184 Freescale Semiconductor...
Страница 1213: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1211...
Страница 1214: ...System Integration Unit Lite SIUL MPC5606S Microcontroller Reference Manual Rev 7 1212 Freescale Semiconductor...
Страница 1238: ...Voltage Regulators and Power Supplies MPC5606S Microcontroller Reference Manual Rev 7 1236 Freescale Semiconductor...
Страница 1252: ...Wakeup Unit WKPU MPC5606S Microcontroller Reference Manual Rev 7 1250 Freescale Semiconductor...
Страница 1258: ...Registers Under Protection MPC5606S Microcontroller Reference Manual Rev 7 1256 Freescale Semiconductor...
Страница 1323: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 Freescale Semiconductor 1321...
Страница 1324: ...Register Map MPC5606S Microcontroller Reference Manual Rev 7 1322 Freescale Semiconductor...