MG82FX532AE Datasheet, PDF (5/151 Pages) Megawin Technology Co., Ltd – Dual data pointer

Content
Features............................................................................................................. 3
Content .............................................................................................................. 5
1. Description..................................................................................................... 9
2. Order information........................................................................................... 9
3. Pin Description ............................................................................................ 10
3.1.
Pin Definition ................................................................................................................10
3.2.
Package Configuration .................................................................................................13
4. Block Diagram ............................................................................................. 15
5. Special Function Register ............................................................................ 16
5.1.
SFR Map ......................................................................................................................16
5.2.
SFR Bit Assignment .....................................................................................................17
6. Memory Organization .................................................................................. 19
6.1.
On-Chip Program Flash................................................................................................19
6.2.
On-Chip Data RAM.......................................................................................................20
6.3.
On-chip expanded RAM (XRAM)..................................................................................24
6.4.
External Data Memory access ......................................................................................25
6.4.1.
Multiplexed Mode for 8-bit MOVX .........................................................................................26
6.4.2.
Multiplexed Mode for 16-bit MOVX .......................................................................................27
6.4.3.
No Address Phase Mode for MOVX .....................................................................................28
7. 8051 CPU Description ................................................................................. 29
7.1.
CPU Register ...............................................................................................................29
7.2.
CPU Timing ..................................................................................................................30
7.3.
CPU Addressing Mode .................................................................................................30
7.4.
Declaration Identifiers in a C51-Compiler .....................................................................31
8. Dual Data Pointer Register (DPTR) ............................................................. 32
9. Configurable I/O Ports ................................................................................. 33
9.1.
IO Structure ..................................................................................................................33
9.1.1.
Quasi-Bidirectional IO Structure ...........................................................................................33
9.1.2.
Push-Pull Output Structure ...................................................................................................34
9.1.3.
Input-Only (High Impedance Input) Structure .......................................................................34
9.1.4.
Open-Drain Output Structure ................................................................................................35
9.2.
I/O Port Register...........................................................................................................35
9.2.1.
Port 0 Register ......................................................................................................................36
9.2.2.
Port 1 Register ......................................................................................................................36
9.2.3.
Port 2 Register ......................................................................................................................36
9.2.4.
Port 3 Register ......................................................................................................................37
9.2.5.
Port 4 Register ......................................................................................................................37
9.2.6.
Port 5 Register ......................................................................................................................38
9.2.7.
Port 6 Register ......................................................................................................................38
9.3.
Alternate Function Redirection......................................................................................38
9.4.
GPIO Sample Code......................................................................................................40
10.Interrupt ....................................................................................................... 41
10.1.
10.2.
10.1.
Interrupt Structure.........................................................................................................41
Interrupt Register..........................................................................................................43
Interrupt Sample Code..................................................................................................48
11.Timers/Counters .......................................................................................... 49
11.1. Timer0 and Timer1 .......................................................................................................49
11.1.1. Mode 0 Structure ..................................................................................................................49
11.1.2. Mode 1 Structure ..................................................................................................................50
11.1.3. Mode 2 Structure ..................................................................................................................50
11.1.4. Mode 3 Structure ..................................................................................................................51
11.1.5. Timer Clock-Out Structure ....................................................................................................51
MEGAWIN
MG82FE/L532 Data Sheet
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