IBM EM78M611E manual ERC AD MSB Data Register Default Value 0B00000000

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EM78M611E

Universal Serial Bus Series Microcontroller

ERC (AD MSB Data Register) Default Value: (0B_0000_0000)

Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0

Bit 9

Bit 8

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

2 bits AD MSB Digital Data.

ERD (AD Control Register) Default Value: (0B_0000_0000)

Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0

0	0	0	0	0	-	ADPS1	ADPS0

ERD [0 1]: The clock source of AD converting time.

00:256kHz

01:128kHz

10:64kHz

11:32kHz

8.12EEPROM

Four bytes of EEPROM are located in the R2C~R2F of Bank 3. The stored data of EEPROM are not erased when the power is off and can be read and re-written by firmware. In some special case of application, for example, cordless keyboard controller, it can store important data, such as the cordless keyboard’s device identical number.

A control register, ERA controls the EEPROM, that is, to read, write, or to erase the data from EEPROM. Writing a command into this register will execute an action to the EEPROM. The command value is defined in the following tale. Note that there is an execution time laps for each command. Before writing the next command into the control register, allow enough time for the EEPROM to finish the previous command.

Command Value	Action	Execution Time

0B_0000_0000	Read	1 ms

0B_0000_0001	Write	9 ms

0B_0000_0010	Erase	128 ms

0B_0000_0011	Disable	N.A.

Product Specification (V1.11) 04.20.2007

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(This specification is subject to change without further notice)

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Contents EM78M611E Trademark Acknowledgments 2.1 Appendix Product Specification V1.1Universal Serial Bus Series Microcontroller FeaturesGeneral Description Product Specification V1.1 Original With Both Type DefinitionApplication VNN Pin AssignmentEM78M611EXBP/BM/DM 20-Pin DIP/SOP/SSOP Pin Description Symbol FunctionALU ACC Data & Control BUS Block DiagramProgram Memory Function DescriptionSpecial Purpose Register Data MemoryOperation Registers 2.2 R1 Timer / Clock Counter Default Value 0B000000002.3 R2 Program Counter & Stack Default Value 0B00000000 Bit 2.4 R3 Status Register Default Value0B00011XXXR3 0 Carry/Borrow Flag Program Memory Page Address Condition2.5 R4 RAM Select Register Default Value 0B00XXXXXX EP0Busy Stall RF Interrupt Status Register Default Value 0B00000000Accumulator Control RegistersTCC Rate WDT Rate Control Register Default Value 0B00111111PS/2 Operation ModePH95 PH93 DualFrq.1 DualFrq.0 FrequencyBit P96 P95 P94 P93 P92 P91 P90 PU8 PU6 PU5 USB Application FIFOs Extra Control RegisterUSB Device Controller USB ApplicationSaving Power Mode ResetInterrupt Dual Clock ModeFunction Description Pattern Detect Application PDASampling Rate and Debounce Length Control RegisterSR.2 SR.1 SR.0 Sampling Rate DB.2 DB.1 DB.0 Debounce TimeR10 PWM1 Duty Cycle Register Erepwm Control Register Default Value 0B00000001Pulse Width Modulation PWM Duty CycleClock Hz Period/255 s ERA AD Channel Select Register Default Value 0B00011111Analog-To-Digital Converter ADC Channel Port ERB AD LSB Data Register Default Value 0B00000000Command Value Action Execution Time ERC AD MSB Data Register Default Value 0B00000000ERD AD Control Register Default Value 0B00000000 Absolute Maximum Ratings DC Electrical CharacteristicSymbol Min Max Unit Symbol Parameter Condition Min Type Max UnitUSB Interface Application Circuit Operation Registers Address Name Bit Bit1 Default ValueSpecial Register Map Extra Register IOCA3 = Address Name Bit Default ValueBinary Instruction Hex Mnemonic Operation Status Affected Instruction SetThis instruction is not recommended for RE, RF operation 11 16ms Bits 4~12 User ID Address Code Option RegisterAddress EM78M611E