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IBM MiEM78P468L manual 9 R8/Port 8 Port 8 I/O Data Register, 10 R9/LCDCR LCD Control Register

Models: MiEM78P468L MiEM78P468N

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EM78P468N/EM78P468L

8-Bit Microcontroller

6.1.9R8/Port 8 (Port 8 I/O Data Register)

(Address: 08h)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

R87

R86

R85

R84

R83

R82

R81

R80

Bits 7~0: 8-bit I/O registers of Port 8

User can use IOC80 register to define each bit either as input or output.

6.1.10 R9/LCDCR (LCD Control Register)

(Address: 09h)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

BS

DS1

DS0

LCDEN

--

LCDTYPE

LCDF1

LCDF0

Bit 7 (BS): LCD bias select bit,

BS = “0”: 1/2 bias

BS = “1”: 1/3 bias

Bit 6 ~ 5 (DS1 ~ DS0): LCD duty select

DS1		DS0	LCD Duty

0		0	1/2 duty

0		1	1/3 duty

1		⋅	1/4 duty

Bit 4 (LCDEN): LCD enable bit

LCDEN = “0”: LCD circuit disabled. All common/segment outputs are set to ground (GND) level.

LCDEN = “1”: LCD circuit enabled.

Bit 3: Not used

Bit 2 (LCDTYPE): LCD drive waveform type select bit

LCDTYPE = “0” : A type waveform

LCDTYPE = “1” : B type waveform

Bits 1 ~ 0 (LCDF1 ~ LCDF0): LCD frame frequency control bits

LCDF1

LCDF0

LCD Frame Frequency (e.g. Fs=32.768kHz)

1/2 Duty

1/3 Duty

1/4 Duty

	0	0	Fs/(256⋅2)=64.0	Fs/(172⋅3)=63.5	Fs/(128⋅4)=64.0

0		1	Fs/(280⋅2)=58.5	Fs/(188⋅3)=58.0	Fs/(140⋅4)=58.5

1		0	Fs/(304⋅2)=53.9	Fs/(204⋅3)=53.5	Fs/(152⋅4)=53.9

1		1	Fs/(232⋅2)=70.6	Fs/(156⋅3)=70.0	Fs/(116⋅4)=70.6

	Note: Fs: sub-oscillator frequency

10 •				Product Specification (V1.5) 02.15.2007

(This specification is subject to change without further notice)

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IBM MiEM78P468L manual 9 R8/Port 8 Port 8 I/O Data Register, 10 R9/LCDCR LCD Control Register, Bit 4 Lcden LCD enable bit

Contents

EM78P468N/L Elan Microelectronics Corporation Contents Infrared Remote Control Application/PWM Waveform Generate Appendix Doc. Version Revision Description DateContents Product Specification V1.5 General Description FeaturesBit Microcontroller Pin Assignment Pin QFP Pin LqfpBlock Diagram System Block DiagramPin Description Symbol Pin No Type FunctionPin Description for Package of QFP64 and LQFP64 Pin Description for Package of QFP44 and LQFP44 SEG11~SEG142 R1/TCC Timer Clock Counter Function DescriptionOperational Registers 1 R0/IAR Indirect Addressing RegisterOn-ChipProgrammemory 4 R3/SR Status Register Bits 6 ~ 5 PS1 ~ 0 Page select bitsBit 2 Z Zero flag Bit 0 C Carry flag5 R4/RSR RAM Select Register 6 R5/Port 5 Port 5 I/O Data and Page of Register Select7 R6/Port 6 Port 6 I/O Data Register 8 R7/Port 7 Port 7 I/O Data RegisterBit 4 Lcden LCD enable bit 9 R8/Port 8 Port 8 I/O Data Register10 R9/LCDCR LCD Control Register Lcdtype = 0 a type waveform Lcdtype = 1 B type waveform11 RA/LCDADDR LCD Address RC/CNTER Counter Enable RegisterRB/LCDDB LCD Data Buffer 14 RD/SBPCR System, Booster and PLL Control Register Address 0DhMain clock Example Fs=32.768KBit Microcontroller CPU Operation Mode 15 RE/IRCR IR and Port 5 Setting Control RegisterAddress 0Eh Address 10h~3Fh R10~R3F General Purpose Register 16 RF/ISR Interrupt Status RegisterAddress 0Fh Accumulator Special Purpose RegistersAddress 05h, Bit 0 of R5 = 3 IOC60/P6CR Port 6 I/O Control Register 4 IOC70/P7CR Port 7 I/O Control Register5 IOC80/P8CR Port 8 I/O Control Register 6 IOC90/RAMADDR 128 Bytes RAM AddressIOCC0/CNT2PR Counter 2 Preset Register IOCB0/CNT1PR Counter 1 Preset RegisterIOCD0/HPWTPR High-Pulse Width Timer Preset Register IOCF0/IMR Interrupt Mask Register IOCE0/LPWTPR Low-Pulse Width Timer Preset RegisterBits 6, 5, 4 Not used 14 IOC71/TCCCR TCC Control Register Bit 7 IntedgeBits 3~0 PSRE, TCCP2 ~ TCCP0 TCC prescaler bits TCC Rate15 IOC81/WDTCR WDT Control Register 16 IOC91/CNT12CR Counters 1, 2 Control RegisterBits 7 ~ 4 Not used WDT RateIOCA1/HLPWTCR High/Low Pulse Width Timer Control Register Low-pulse Width Timer ScaleHigh-pulse Width Timer Scale Counter 1 ScaleIOCB1/P6PH Port 6 Pull-high Control Register IOCC1/P6OD Port 6 Open Drain Control RegisterIOCD1/P8PH Port 8 Pull High Control Register IOCE1/P6PL Port 6 Pull Low Control RegisterTCC and WDT Prescaler MUXBit Microcontroller WDT Setting Flowchart TCC Setting FlowchartReset and Wake-up I/O PortsAddress Name Reset Type Bit Bit Microcontroller Summary of Registers Initialized ValuesINT Psre TCCP2 TCCP1 TCCP0 Name Reset Type Bit Wake-up Signal Sleep Mode Idle Mode Green Mode Normal Mode Oscillator Phase Lock Loop PLL ModeOscillator Modes Main clock Example Fs=32.768KHz Crystal Oscillator/Ceramic Resonators CrystalOscillator Source Oscillator Type Frequency C1 pF C2 pF Power-on Considerations RC Oscillator Mode with Internal CapacitorRC Oscillator Frequencies Pin Rext Average Fosc 5V, 25 C Average Fosc 3V, 25 CExternal Power-on Reset Circuit Residue-Voltage ProtectionInterrupt 13 Interrupt Back-up1 R9/LCDCR LCD Control Register LCD DriverBits 6 ~ 5 DS1 ~ DS0 LCD duty select 2 RA/LCDADDR LCD Address 3 RB/LCDDB LCD Data BufferBits 7 ~ 5 Not used, fixed to Bits 4 ~ 0 LCDA4 ~ LCDA0 LCD RAM address4 RD/SBPCR System, Booster and PLL Control Registers Bit 2 ~ 1 BF1 ~ 0 LCD booster frequency select bitsExternal circuit for 1/3 Bias Boosting circuits connection for LCD voltageExternal circuit for 1/2 Bias 16 LCD Waveform for 1/2 Bias, 1/2 Duty 18 LCD Waveform for 1/3 Bias, 1/3 Duty Infrared Remote Control Application/PWM Waveform Generate ⋅ 1 + decimal C ounter Preset Value Iocc 0 ⋅ prescaler21 LGP=0, Irout Pin Output Waveform 23 LGP=0, Irout Pin Output Waveform Bit Microcontroller IR/PWM Function Enable Flowchart IR applicationCode Options Bits 12 ~ 10 Not usedWord Bits12~10 WordBits 2~0 PR2~PR0 Protect Bit Instruction SetPR1PR0Protect Binary Instruction Hex Mnemonic Operation Status ConventionBinary Instruction Hex Mnemonic Operation Status Affected JZATiming Diagram AC Test Input/Output WaveformItems Symbol Condition Rating Min Max Unit Absolute Maximum RatingsElectrical Characteristic DC Electrical CharacteristicsSymbol Parameter Condition Min Typ Max Unit Ta= -40 C ~85 C, VDD= 5.0V, GND=Ta= -40C ~85 C, VDD= 3.0V, GND= Symbol Parameter Conditions Min Typ Max Unit AC Electrical CharacteristicsTa=- 40C ~ 85 C, VDD=5V±5%, GND=0V Device Characteristic Vih/Vil /RESET pins with schmitt inverterVih/Vil Port 7, Port 8 All Input pins with schmitt inverter P5.7 Voh/Ioh VDD=5V, IROCS=1 P5.7 Voh/Ioh VDD=3V, IROCS=1 80 P5.7 Voh/Ioh VDD=5V, IROCS=0 Max Typ +25 Setup time from Power on Reset = 51 K 13 Typical Eric OSC Frequency vs. Temperature Xin Pin VDD=5V Typical ICC2 vs. Temerature Typical ICC1 vs. Temerature Typical ISB vs. Temerature 22 Operating Voltage under Temperature Range of 0C to 70C Application Circuit Name Package Type Pin Count Package Size Package TypeEM78P468NxS/xJ Package Information QFPLqfp 900 100 BSC 00 REFMin Normal Max 30TYP 15TYP EM78P468N/L Program Pin List Wiring diagram is for Elan DwtrProgram Pin Name IC Pin Name QFP-64 QFP-44 Main oscillator Crystal mode, Sub oscillator Crystal mode Main oscillator PLL mode, Sub oscillator Crystal modeICE 468XA Oscillator Circuit JP Main oscillator RC mode, Sub oscillator CrystalBit Microcontroller ICE 468XA Output Pin Assignment JP VLCD3 GND OscoAddress Trap Detect Quality Assurance and ReliabilityTest Category Test Conditions Contents III