IBM EM78M611E manual Pin Description, Symbol Function

Page 10

EM78M611E

Universal Serial Bus Series Microcontroller

6

Pin Description

 

 

Symbol

I/O

Function

 

 

 

 

 

 

 

 

 

P50 ~ P57

I/O

General 8-bit bidirectional input/output port. All pins on this port can be

 

 

 

internally pulled-high by software control.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P60 ~ P67

I/O

General 8-bit bidirectional input/output port. All pins on this port can be

 

 

 

internally pulled-high by software control.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P70 ~ P72

 

LED sink pins

 

 

 

I/O

P76 ~ P77 will have an internally pulled-high resistor when the EM78M611E is

 

 

 

P76 ~ P77

 

 

 

 

running in PS/2 mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P80 ~ P87

I/O

General 8-bit bidirectional input/output port. All pins on this port can be

 

 

 

internally pulled-high by software control.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P90 ~ P93

I/O

General 6-bit bidirectional input/output port. All pins on this port can be

 

 

 

P95 ~ P96

internally pulled-high by software control or LED sink pins.

 

 

 

 

 

 

 

 

 

 

 

 

 

P94 / Vpp

I

Input only. MTP program pin.

 

 

 

 

 

 

 

 

 

PWM1

O

PWM output pins.

 

 

 

PWM2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USB plus data line interface or CLK for PS/2 keyboard.

 

 

D+/CLK/P74

I/O

When the EM78M611E is running in PS/2 mode, this pin will have an internal

 

 

 

 

 

pulled-high resistor (2.2KΩ), with VDD=5.0V.

 

 

 

 

 

 

 

 

 

 

 

USB minus data line interface or DATA for PS/2 keyboard.

 

 

 

 

 

When the EM78M611E is running in PS/2 mode, this pin will have an internal

 

 

D-/DATA/P75

I/O

pulled-high resistor (2.2KΩ), with V3.3=3.3V.

 

 

 

 

 

When the EM78M611E is running in USB mode, this pin will have an internal

 

 

 

 

 

pulled-high resistor (1.5KΩ), with VDD=3.3V.

 

 

 

 

 

 

 

 

 

OSCI

I

6MHz / 12MHz ceramic resonator input.

 

 

 

 

 

 

 

 

 

OSCO

O

Return path for 6MHz / 12MHz ceramic resonator.

 

 

 

 

 

 

 

 

 

VNN

−

MTP program pin. Used in programming the on-chip ROM. During normal

 

 

 

operation, this pin is connected to Ground.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V3.3

PWR

3.3V regulator output

 

 

 

 

 

 

 

 

 

VDD

PWR

Power supply pin

 

 

 

 

 

 

 

 

 

GND

PWR

Ground pin

 

 

 

 

 

 

 

6 •

Product Specification (V1.1) 11.22.2006

(This specification is subject to change without further notice)

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Contents EM78M611E Trademark Acknowledgments 2.1 Product Specification V1.1 AppendixGeneral Description FeaturesUniversal Serial Bus Series Microcontroller Product Specification V1.1 Application Type DefinitionOriginal With Both Pin Assignment VNNEM78M611EXBP/BM/DM 20-Pin DIP/SOP/SSOP Symbol Function Pin DescriptionBlock Diagram ALU ACC Data & Control BUSFunction Description Program MemoryData Memory Special Purpose Register2.3 R2 Program Counter & Stack Default Value 0B00000000 2.2 R1 Timer / Clock Counter Default Value 0B00000000Operation Registers R3 0 Carry/Borrow Flag 2.4 R3 Status Register Default Value0B00011XXXBit Condition Program Memory Page Address2.5 R4 RAM Select Register Default Value 0B00XXXXXX EP0Busy Stall Default Value 0B00000000 RF Interrupt Status RegisterControl Registers AccumulatorControl Register Default Value 0B00111111 TCC Rate WDT RateOperation Mode PS/2Bit P96 P95 P94 P93 P92 P91 P90 DualFrq.1 DualFrq.0 FrequencyPH95 PH93 PU8 PU6 PU5 Extra Control Register USB Application FIFOsUSB Application USB Device ControllerReset Saving Power ModeDual Clock Mode InterruptPattern Detect Application PDA Function DescriptionControl Register Sampling Rate and Debounce LengthDB.2 DB.1 DB.0 Debounce Time SR.2 SR.1 SR.0 Sampling RateDuty Cycle Erepwm Control Register Default Value 0B00000001Pulse Width Modulation PWM R10 PWM1 Duty Cycle RegisterAnalog-To-Digital Converter ADC ERA AD Channel Select Register Default Value 0B00011111Clock Hz Period/255 s ERB AD LSB Data Register Default Value 0B00000000 Channel PortERD AD Control Register Default Value 0B00000000 ERC AD MSB Data Register Default Value 0B00000000Command Value Action Execution Time Symbol Parameter Condition Min Type Max Unit DC Electrical CharacteristicSymbol Min Max Unit Absolute Maximum RatingsUSB Interface Application Circuit Special Register Map Address Name Bit Bit1 Default ValueOperation Registers Address Name Bit Default Value Extra Register IOCA3 =Instruction Set Binary Instruction Hex Mnemonic Operation Status AffectedThis instruction is not recommended for RE, RF operation Address Code Option Register11 16ms Bits 4~12 User ID Address EM78M611E
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