HT48E30
Preliminary
Features
·
Operating voltage:
·
HALT function and wake-up feature reduce power
8-Bit I/O Type MCU (With EEPROM)
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
·
Low voltage reset function
·
23 bidirectional I/O lines (max.)
·
1 interrupt input shared with an I/O line
·
8-bit programmable timer/event counter with overflow
consumption
·
4-level subroutine nesting
·
Up to 0.5ms instruction cycle with 8MHz system clock
at V
DD
=5V
·
Bit manipulation instruction
·
14-bit table read instruction
·
63 powerful instructions
·
10
6
erase/write cycles EEPROM data memory
·
EEPROM data retention > 10 years
·
All instructions in one or two machine cycles
·
In system programming (ISP)
·
24/28-pin SKDIP/SOP package
interrupt and 8-stage prescaler
·
On-chip crystal and RC oscillator
·
Watchdog Timer
·
2048´14 program memory ROM (MTP)
·
128´8 data memory EEPROM
·
96´8 data memory RAM
·
Buzzer driving pair and PFD supported
General Description
The HT48E30 is an 8-bit high performance, RISC archi-
tecture microcontroller device specifically designed for
multiple I/O control product applications.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, HALT and
wake-up functions, watchdog timer, buzzer driver, as
well as low cost, enhance the versatility of these devices
to suit a wide range of application possibilities such as
industrial control, consumer products, subsystem con-
trollers, etc.
Block Diagram
IN T /P G 0
In te rru p t
C ir c u it
S T A C K
4 L e v e ls
T M R 0
IN T C
T M R 0 C
P G 0
In s tr u c tio n
R e g is te r
M
U
X
W D T S
D A T A
M e m o ry
W D T P r e s c a le r
W D T
M
U
X
M
U
X
P r e s c a le r
T M R /P C 0
M
U
X
f
S
Y S
P ro g ra m
R O M
P ro g ra m
C o u n te r
E N /D IS
f
S
Y S
/4
M P
W D T O S C
P A C
In s tr u c tio n
D e c o d e r
A L U
T im in g
G e n e ra to r
S h ifte r
M U X
P A
B Z /B Z
P B C
P G 1
P G 2
P B
P C C
O S C 2
O S
R E
V D
V S
C 1
S
D
S
A C C
P C
P O R T C
P O R T B
P B 0 ~ P B 7
P O R T A
P A 0 ~ P A 7
S T A T U S
P C 0 ~ P C 5
D a ta M e m o ry
E E P R O M
E E C R
P G C
P G
P O R T G
P G 0
Rev. 0.00
1
January 12, 2004
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
