IA6805E2

Data Sheet

Microprocessor Unit

As of Production Version 00

Copyright

© 2002

ENG21108140100

www.innovasic.com

Customer Support:

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FEATURES

• Internal 8-bit Timer with 7-Bit

Programmable Prescaler

• On-chip Clock

• Memory Mapped I/O

• Versatile Interrupt Handling

• True Bit Manipulation

• Bit Test and Branch Instruction

• Vectored Interrupts

• Power-saving STOP and WAIT Modes

• Fully Static Operation

• 112 Bytes of RAM

technology produces replacement ICs far more complex than "emulation" while ensuring they are compatible

"undocumented features" are duplicated. This data sheet documents all necessary engineering information

about the IA6805E2 including functional and I/O descriptions, electrical characteristics, and applicable

timing.

Package Pinout

(6)

AS

(1)

RESET_N

(2)

IRQ_N

(3)

LI

(4)

DS

(5)

RW_N

(7)

PA7

(8)

(9)

PA5

(10)

(11)

(12)

PA2

(13)

PA1

(14)

40 Pin DIP

IA6805E2

PB4

PB5

PB6

PB7

(20)

VSS

(15)

A12

(16)

A11

(17)

A10

(18)

A9

(19)

A8

(21)

(22)

(23)

(24)

B6

B7

(40)

(39)

(38)

(37)

(36)

(35)

(34)

(33)

(32)

(31)

(30)

(29)

(28)

(27)

(26)

(25)

PA0

B4

B5

B2

B3

B0

B1

PB2

PB3

PB0

PB1

OSC2

TIMER

VDD

OSC1

PA6

PA4

PA3

B2

44 Pin LCC

IA6805E2

(12)

PA3

(7)

AS

(8)

PA7

(9)

PA6

(10)

PA5

(11)

PA4

(13)

PA2

(14)

PA1

(15)

PA0

(16)

NC

(17)

NC

PB1

PB7

PB6

PB5

PB3

PB2

(34)

(39)

(38)

(37)

(36)

(35)

(33)

(32)

(31)

(30)

(29)

B3

B1

B0

PB4