N79E825A/824A/823A/822A Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1
2
3
GENERAL DESCRIPTION ......................................................................................................... 4
FEATURES................................................................................................................................. 5
PARTS INFORMATION LIST ..................................................................................................... 6
3.1
Lead Free (RoHS) Parts information list......................................................................... 6
4
5
6
PIN CONFIGURATION............................................................................................................... 7
PIN DESCRIPTION..................................................................................................................... 8
FUNCTIONAL DESCRIPTION.................................................................................................... 9
6.1
6.2
6.3
6.4
6.5
6.6
6.7
On-Chip Flash EPROM .................................................................................................. 9
I/O Ports.......................................................................................................................... 9
Serial I/O......................................................................................................................... 9
Timers............................................................................................................................. 9
Interrupts......................................................................................................................... 9
Data Pointers .................................................................................................................. 9
Architecture................................................................................................................... 10
6.7.1 ALU ................................................................................................................................10
6.7.2 Accumulator ...................................................................................................................10
6.7.3 B Register.......................................................................................................................10
6.7.4 Program Status Word:....................................................................................................10
6.7.5 Scratch-pad RAM ...........................................................................................................10
6.7.6 Stack Pointer..................................................................................................................11
Power Management...................................................................................................... 11
6.8
7
MEMORY ORGANIZATION...................................................................................................... 12
7.1
7.2
7.3
7.4
7.5
7.6
Program Memory (on-chip Flash)................................................................................. 12
Data Memory ................................................................................................................ 12
Register Map................................................................................................................. 13
Working Registers......................................................................................................... 15
Bit addressable Locations............................................................................................. 15
Stack............................................................................................................................. 15
8
9
SPECIAL FUNCTION REGISTERS ......................................................................................... 16
INSTRUCTION SET.................................................................................................................. 47
9.1
Instruction Timing.......................................................................................................... 56
10
11
POWER MANAGEMENT.......................................................................................................... 59
10.1 Idle Mode ...................................................................................................................... 59
10.2 Power Down Mode ....................................................................................................... 59
RESET CONDITIONS............................................................................................................... 61
11.1 Sources of reset............................................................................................................ 61
11.1.1 External Reset..............................................................................................................61
Publication Release Date: Aug 5, 2010
- 1 -
Revision A02
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