IA6805E2
Microprocessor Unit
Preliminary Data Sheet
FEATURES
• Form, Fit, and Function Compatible with the Harris© CDP6805E2CE and Motorola©
MC146805E2
• 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
The IA6805E2 is a "plug-and-play" drop-in replacement for the original IC. innovASIC produces
replacement ICs using its MILESTM, or Managed IC Lifetime Extension System, cloning technology. This
technology produces replacement ICs far more complex than "emulation" while ensuring they are compatible
with the original IC. MILESTM captures the design of a clone so it can be produced even as silicon
technology advances. MILESTM also verifies the clone against the original IC so that even the
"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.
OSC1
TIMER
PB0
(41)
(40)
RESET_N
OSC2
IRQ_N
(1)
(42)
LI
(2)
(43)
DS
VDD
(39)
OSC1
(38)
OSC2
(4)
(37)
TIMER
RW_N
(5)
(36)
PB0
AS
(7)
(39)
PB1
AS
(6)
(35)
PB1
PA7
(8)
(38)
PB2
PA7
(7)
(34)
PB2
PA6
(9)
PA6
(8)
(33)
PB3
PA5
(10)
VDD
(40)
IA6805E2
40 Pin DIP
(44)
DS
(3)
(3)
RW_N
LI
(4)
(2)
NC
(1)
IRQ_N
(5)
RESET_N
(6)
Functional Block Diagram
(37)
44 Pin LCC
PB3
(36)
IA6805E2
PB4
PA5
(9)
(32)
PB4
PA4
(11)
(35)
PB5
PA4
(10)
(31)
PB5
PA3
(12)
(34)
PB6
PA3
(11)
(30)
PB6
PA2
(13)
(33)
PB7
PA2
(12)
(29)
PB7
PA1
(14)
(32)
B0
B4
(23)
B5
A8
(19)
(22)
B6
VSS
(20)
(21)
B7
Copyright © 2000
innovASIC
The End of Obsolescence™
(28)
(24)
(18)
(27)
(17)
A9
B4
A10
NC
B3
(26)
(25)
B5
(16)
(25)
B3
A11
B6
(29)
(24)
(17)
B7
NC
(23)
B2
VSS
(26)
(22)
(15)
A8
B2
A12
(21)
B1
(30)
A9
(31)
(16)
(20)
(15)
NC
A10
PA0
B1
(19)
B0
(27)
(18)
(28)
(14)
A11
(13)
A12
PA1
PA0
www.innovasic.com
Customer Support:
Page 1 of 32
1-888-824-4184
