|
|
PDF EM73P461A Data sheet ( Hoja de datos )
| Número de pieza | EM73P461A | |
| Descripción | 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT | |
| Fabricantes | ELAN Microelectronics Corp | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de EM73P461A (archivo pdf) en la parte inferior de esta página. Total 38 Páginas | ||
|
No Preview Available !
EM73P461A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
GENERAL DESCRIPTION
EM73P461A is an advanced single chip CMOS 4-bit one-time programming (OTP) micro-controller. It contains
4K/8K-byte ROM, 244-nibble RAM, 4-bit ALU, 13-level subroutine nesting, 22-stage time base, two 12-bit timer/
counters for the kernel function. EM73P461A also contains 6 interrupt sources, 1 input port, 2 bidirection ports,
LCD display (32x4), and one high speed timer/counter with melody output.
EM73P461A has plentiful operating modes (SLOW, IDLE, STOP) intended to reduce the power consumption.
FEATURES
• Operation voltage : 2.4V to 3.6V.
• Clock source
: Dual clock system. Low-frequency oscillator is Crystal or RC oscillator (32K Hz,
connect an external resistor) by mask option and high-frequency oscillator is RC
oscillator (connect an external resistor).
• Instruction set
: 109 powerful instructions for 4K ROM / 107 powerful instructoins for 8K ROM.
• Instruction cycle time : Up to 2us for 4 MHz (high speed clock).
122 µs or 244µs by frequency double mask option for 32768 Hz (low speed clock).
• ROM capacity
: 4096 X 8 bits / 8192 X 8 bits ROM are choosed by mask option.
• RAM capacity
: 244 X 4 bits.
• Input port
: 1 port (P0). P0(0..3) and IDLE releasing function are available by mask option.
• Bidirection port : 2 ports (P4, P8). P4.0 and SOUND is available by mask option. P4.1 is shared with
HTC external input. P8(0..3) and IDLE releasing function are available by mask
option.
• 12-bit timer/counter : Two 12-bit timer/counters are programmable for timer, event counter and pulse width
measurement.
• High speed timer/counter : One 8-bit high speed timer/counters is programmable for auto load timer, melody
output and pulse width measurement.
• Built-in time base counter : 22 stages.
• Subroutine nesting : Up to 13 levels.
• Interrupt
: External . . . . . 2 input interrupt sources.
Internal . . . . . . 2 Timer overflow interrupts, 1 time base interrupt.
1 high speed timer overflow interrupt.
• LCD driver
: 32 X 4 dots, 1/4duty, 1/3duty, 1/2duty, static, 1/2 bias, 1/3 bias; 6 options selectable.
• Power saving function : SLOW, IDLE, STOP operation mode.
• Package type
: Chip form 61 pins.
QFP 100 pins.
PDIP
42 pins.
APPLICATIONS
EM73P461A is suitable for application in family applicance, consumer products, hand held games and the toy
controller.
* This specification are subject to be changed without notice.
12.27.2001 1
1 page  
address
000h
002h
004h
006h
008h
00Ah
00Ch
00Eh
086h
...
FFFh
EM73P461A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
4096 x 8 bits
Preliminary
Reset start address
INT0; External interrupt service routine entry address
HTCI; High speed timer interrupt service entry address
TRGA; Timer/counterA interrupt service routine entry address
TRGB; Timer/counter B interrupt service routine entry address
TBI; Time base interrupt service routine entry address
INT1; External interrupt service routine entry address
SCALL, subroutine call entry address
...
User's program and fixed data are stored in the program ROM. User's program is according the PC value
to send next executed instruction code. Fixed data can be read out by two ways.
(1) Table-look-up instruction :
Table -look-up instruction is depended on the Data Pointer (DP) to indicate to ROM address, then to get the
ROM code data.
LDAX
LDAXI
Acc ← ROM[DP]L
Acc ← ROM[DP]H,DP+1
DP is a 12-bit data register which can store the program ROM address to be the pointer for the ROM code
data. First, user load ROM address into DP by instruction "STADPL, STADPM, STADPH", then user can
get the lower nibble of ROM code data by instruction "LDAX" and higher nibble by instruction "LDAXI".
PROGRAM EXAMPLE: Read out the ROM code of address 777h by table-look-up instruction.
LDIA #07h;
STADPL
STADPM
STADPH
; DP3-0 ← 07h
; DP5-4 ← 07h
; DP8-6 ← 07h, Load DP=0777h
:
LDL #00h;
LDH #03h;
LDAX
STAMI
LDAXI
STAM
; ACC ← 6h
; RAM[30] ← 6h
; ACC ← 5h
; RAM[31] ← 5h
:
ORG0777h;
DATA 56h;
:
* This specification are subject to be changed without notice.
12.27.2001 5
5 Page 
EM73P461A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
TRGB (Time B overflow interrupt)
PC 0 0 0 0 0 0 0 0 1 0 0 0
PC 0 0 0 0 0 0 0 0 0 1 0 0 0
TBI (Time base interrupt)
PC 0 0 0 0 0 0 0 0 1 0 1 0
PC 0 0 0 0 0 0 0 0 0 1 0 1 0
INT1 (External interrupt from P8.0)
PC 0 0 0 0 0 0 0 0 1 1 0 0
PC 0 0 0 0 0 0 0 0 0 1 1 0 0
(4) Reset operation:
PC 0 0 0 0 0 0 0 0 0 0 0 0
PC 0 0 0 0 0 0 0 0 0 0 0 0 0
(5) Other operations:
For 1-byte instruction execution: PC + 1
For 2-byte instruction execution: PC + 2
(for 4K ROM)
(for 8K ROM)
(for 4K ROM)
(for 8K ROM)
(for 4K ROM)
(for 8K ROM)
(for 4K ROM)
(for 8K ROM)
ACCUMULATOR
Accumulator is a 4-bit data register for temporary data. For the arithematic, logic and comparative opertion
.., ACC plays a role which holds the source data and result.
FLAGS
There are four kinds of flag, CF ( Carry flag ), ZF ( Zero flag ), SF ( Status flag ) and GF ( General flag ),
these 4 1-bit flags are affected by the arithematic, logic and comparative .... operation.
All flags will be put into stack when an interrupt subroutine is served, and the flags will be restored after
RTI instruction executed.
* This specification are subject to be changed without notice.
12.27.2001 11
11 Page | ||
| Páginas | Total 38 Páginas | |
| PDF Descargar | [ Datasheet EM73P461A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EM73P461A | 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT | ELAN Microelectronics Corp |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |