Document
MLC822A 8-Bit micro-controller with 660 dots LCD Driver
Features
• Single chip 8-bit micro-controller • Operating voltage: 2.4V to 5.5V • Memory :
♦ Program ROM: 48*1024 Bytes ♦ Data RAM (stack RAM included) : 3072
Bytes ♦ LCD RAM : 88 Bytes
• 10 input/output pins:
♦ Dedicated I/O pins: P0[5:0] ♦ Share pin I/O:
! P0[7:6]/(UART TX, RX) ! P1[0:1]/(SCLK, SDIO)
• Half duplex UART function • Build-in Megawin E-flash interface • Dedicated SPK pin for tone output • LCD driver output:
♦ Max 60 segment × 11 common ♦ 1/11, 1/10, 1/9 duty and 1/4, 1/5 bias
driving mode
♦ Internal R-type VLCD divider ♦ 10 level programmable frame rate from
56.7Hz to 113.8Hz
• Two re-loadable 8-bit timers • Two dividers
One 14-bit divider with the clock source from sub-oscillator to generate a 2-Hz interrupt
One 7-bit divider with the clock source from main oscillator
• Build-in dual oscillation circuit:
♦ Ring oscillator up to 5MHz at 3.6V – 5.5V 4MHZ at 2.4V – 3.4V for main oscillator (Fosc)
♦ 32768Hz crystal oscillator for sub-oscillator (Fx32)
• Build-in 8-level battery-low detector circuit
This document contains information on a new product under development by MEGAWIN. MEGAWIN reserves the right to change or discontinue
this product without notice.
MEGAWIN Technology Co., Ltd. 2004 All rights reserved.
2003/01/19 version A4
MEGAWIN
General Description
MLC822A is a cost effective, high performance 8-bit micro-controller of MEGAWIN. It integrates an 8-bit pipeline CPU core, 48KB ROM, 3072B RAM, two 8-bit timers, 660 dots LCD driver, 10 I/O pins and other system control circuits into a single chip. MLC822A build in an UART interface circuit, which could
be used to system link with other devices. An e-flash interface is useful for the external memory application. The MLC822A provides a build-in oscillator as clock source. It is suitable for data bank product, hand-held game, toy controllers and other products’ applications.
Pad Description
Pad Name
P0.5~P0.0
P0.7~P0.6 (TX, RX)
I/ Description O
I/ programmable I/O ports with interrupt function O
I/ 1. programmable I/O ports with interrupt function O 2. UART interface
SPK P1.0~ P1.1/ (UCLK, SDIO) GND, VDD
OSCI X32I X32O /RES COM0~ COM10
O Tone output I/ 1. Port 1 bit0 ~ bit1 O 2. e_flash interface P Power pins I Ring oscillator input pin. Connect to external resistor I 32768 Hz crystal input O 32768 Hz crystal output I System reset pin (low active) O LCD common signals output pins
SEG0~SEG59 O LCD segment signals output pins
Total 88 pins
2
MLC822A Technical Summary
MEGAWIN
Pad Assignment
LOGO
1 88
RAM
66
ROM
MLC 8 2 2A
22
45
MEGAWIN
MLC822A Technical Summary
3
Absolute Maximum Rating
PARAMETER Supply Voltage to Ground Potential Applied Input / Output Voltage Power Dissipation Ambient Operating Temperature Storage Temperature
RATING -0.3 to +5.0 -0.3 to +5.0
60 0 to +70 -55 to +150
UNIT V V
mW °C °C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and
reliability of the device.
DC Characteristics
(VDD-VSS = 3 V, FOSC = 4MHz, Ta = 25° C; unless otherwise specified)
PARAMETER Op. Voltage
SYM. VDD
CONDITIONS -
Op. Current
IOP1 Normal mode (
main clock: 4Mhz
sub clock: 32768 Hz
CPU clock: 1Mhz
LCD on no load
VDD = 3V)
IOP2 Halt mode (
Main clock: off
Sub clock: 32768 Hz
CPU off
LCD on no load
VDD = 3V
IOP3 Main clock: off
Sub clock: 32768 Hz
LCD off
VDD = 3V
Standby Current
ISTB No load
Input High Voltage
VIH
-
Input Low Voltage
VIL
-
Battery Low Indicate Voltage
VBL1
BL_CR.4=0, (BL_CR.3, BL_CR.2, BL_CR.1 = 100)
VBL2
BL_CR.4=1, (BL_CR.3, BL_CR.2, BL_CR.1 = 100)
Port 0, 1, 2, 3 drive current
IOH VOH = 3.6V, VDD = 4.5V
Port 0, 1, 2, 3 sink current
IOL0 VOL = 0.4V, VDD = 4.5V
SEG0 ~ SEG69 drive current
IOH1
VOH = 2.4V, VLCD = 3.0V
SEG0 ~ SEG69 sink current IOL1 VOL = 0.4V, VLCD = 0.0V
Internal Pull-high Resistor for ports
RPH1 RPH2
VIL = 0V VIL = 0V
MIN. 2.4
-
TYP. -
0.5
MAX. 5.5
12 20
3
0.8 VDD
0 -
1 3.0
3 VDD
0.4 -
- 4.5
-
- 1.8 - 3.0 0.3 0.4 -
55K 400K
-
UNIT V mA
uA
uA
µA V V V
mA mA µA µA Ω
4
MLC822A Technical Summary
MEGAWIN
AC Characteristics
(Ta = 25° C; unless otherwise specified)
PARAMETER
SYM.
CPU Op. Frequency
FCPU
Frequency Deviation by Voltage Drop for RC Oscillator
POR duration
∆f
f TPOR
CONDITIONS R=740KΩ, VDD = 3.0V
f(3.6V) - f(2.4V) f(3.0V)
FOSC = 1 MHz
MIN. -
-
TYP. MAX. 4-
57
UNIT MHz
%
10 15
50
mS
5
MLC822A Technical Summary
MEGAWIN
.