W78I054D/W78I052D/W78I051D 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
7
PIN CONFIGURATIONS............................................................................................................. 7
PIN DESCRIPTIONS .................................................................................................................. 9
BLOCK DIAGRAM .................................................................................................................... 11
FUNCTIONAL DESCRIPTION.................................................................................................. 12
7.1
7.2
7.3
7.4
7.5
7.6
7.7
On-Chip Flash EPROM ................................................................................................ 12
I/O Ports........................................................................................................................ 12
Serial I/O....................................................................................................................... 12
Timers........................................................................................................................... 12
Interrupts....................................................................................................................... 12
Data Pointers ................................................................................................................ 13
Architecture................................................................................................................... 13
7.7.1 ALU ................................................................................................................................13
7.7.2 Accumulator ...................................................................................................................13
7.7.3 B Register.......................................................................................................................13
7.7.4 Program Status Word.....................................................................................................13
7.7.5 Scratch-pad RAM ...........................................................................................................13
7.7.6 Stack Pointer..................................................................................................................13
8
9
MEMORY ORGANIZATION...................................................................................................... 14
8.1
8.2
Program Memory (on-chip Flash)................................................................................. 14
Scratch-pad RAM and Register Map............................................................................ 14
8.2.1 Working Registers ..........................................................................................................16
8.2.2 Bit addressable Locations ..............................................................................................17
8.2.3 Stack ..............................................................................................................................17
SPECIAL FUNCTION REGISTERS ......................................................................................... 18
9.1 SFR Detail Bit Descriptions .......................................................................................... 20
10
11
12
INSTRUCTION.......................................................................................................................... 35
INSTRUCTION TIMING............................................................................................................ 43
POWER MANAGEMENT.......................................................................................................... 44
12.1 Idle Mode ...................................................................................................................... 44
12.2 Power Down Mode ....................................................................................................... 44
RESET CONDITIONS............................................................................................................... 45
13
13.1 Sources of reset............................................................................................................ 45
13.1.1 External Reset..............................................................................................................45
13.1.2 Software Reset.............................................................................................................45
Publication Release Date: Dec 30, 2009
- 1 -
Revision A09
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