em78p468n ELAN Microelectronics Corp, em78p468n Datasheet - Page 3

• Manufacturer Part Number: em78p468n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Contents
Product Specification (V1.6) 12.31.2007
1
2
3
4
5
6
General Description .................................................................................................. 1
Features ..................................................................................................................... 1
Pin Assignment ......................................................................................................... 2
Block Diagram ........................................................................................................... 3
Pin Description.......................................................................................................... 4
Function Description ................................................................................................ 6
6.1
6.2
Operational Registers......................................................................................... 6
Special Purpose Registers ............................................................................... 15
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10 R9/LCDCR (LCD Control Register)...................................................................10
6.1.11 RA/LCD_ADDR (LCD Address) ........................................................................11
6.1.12 RB/LCD_DB (LCD Data Buffer) ........................................................................11
6.1.13 RC/CNTER (Counter Enable Register).............................................................11
6.1.14 RD/SBPCR (System, Booster and PLL Control Register) ................................12
6.1.15 RE/IRCR (IR and Port 5 Setting Control Register) ...........................................13
6.1.16 RF/ISR (Interrupt Status Register) ....................................................................14
6.1.17 Address: 10h~3Fh; R10~R3F (General Purpose Register) ..............................14
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
6.2.10 IOCD0/HPWTPR (High-Pulse Width Timer Preset Register) ...........................17
6.2.11 IOCE0/LPWTPR (Low-Pulse Width Timer Preset Register) .............................18
6.2.12 IOCF0/IMR (Interrupt Mask Register) ...............................................................18
6.2.13 IOC61/WUCR (Wake-up and Sink Current of P5.7/IROUT Control Register) .18
6.2.14 IOC71/TCCCR (TCC Control Register) ............................................................19
6.2.15 IOC81/WDTCR (WDT Control Register)...........................................................20
6.2.16 IOC91/CNT12CR (Counters 1, 2 Control Register) ..........................................20
R1/TCC (Timer Clock Counter) ...........................................................................6
IOCA0/RAM_DB (128 Bytes RAM Data Buffer)................................................16
IOCB0/CNT1PR (Counter 1 Preset Register)...................................................17
IOCC0/CNT2PR (Counter 2 Preset Register)...................................................17
R0/IAR (Indirect Addressing Register) ................................................................6
R2/PC (Program Counter)...................................................................................6
R4/RSR (RAM Select Register) ..........................................................................9
R5/Port 5 (Port 5 I/O Data and Page of Register Select.....................................9
R6/Port 6 (Port 6 I/O Data Register) ...................................................................9
R7/Port 7 (Port 7 I/O Data Register) ...................................................................9
R8/Port 8 (Port 8 I/O Data Register) .................................................................10
A (Accumulator).................................................................................................15
IOC50/P5CR (Port 5 I/O and Ports 7, 8 for LCD Segment Control Register)..15
IOC60/P6CR (Port 6 I/O Control Register) .......................................................16
IOC70/P7CR (Port 7 I/O Control Register) .......................................................16
IOC80/P8CR (Port 8 I/O Control Register) .......................................................16
IOC90/RAM_ADDR (128 Bytes RAM Address) ................................................16
R3/SR (Status Register) .....................................................................................8
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