HT48RA0A
8-Bit Remote Type MCU
Features
·
Operating voltage: 2.2V~3.6V
·
Ten bidirectional I/O lines
·
Six Schmitt trigger input lines
·
One carrier output (1/2 or 1/3 duty)
·
On-chip crystal and RC oscillator
·
Watchdog Timer
·
1K´14 program EPROM
·
32´8 data RAM
·
HALT function and wake-up feature reduce power
·
62 powerful instructions
·
Up to 1ms instruction cycle with 4MHz system clock
·
All instructions in 1 or 2 machine cycles
·
14-bit table read instructions
·
One-level subroutine nesting
·
Bit manipulation instructions
·
20/24-pin SOP package
consumption
General Description
The HT48RA0A is an 8-bit high performance, RISC ar-
chitecture microcontroller device specifically designed
for multiple I/O control product applications. This device
is the OTP version which is fully pin and functionally
compatible with mask version HT48CA0 device.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, watchdog timer,
HALT and wake-up functions, as well as low cost, en-
hance the versatility of this device to suit a wide range of
application possibilities such as industrial control, con-
sumer products, and particularly suitable for use in
products such as infrared remote controllers and vari-
ous subsystem controllers.
Block Diagram
S T A C K
P ro g ra m
E P R O M
P ro g ra m
C o u n te r
S Y S C L K /4
In s tr u c tio n
R e g is te r
M P
M
U
X
D A T A
M e m o ry
F r e q u e n c y D iv id e r
W D T
L e v e l o r C a r r ie r
C a r r ie r C o n tr o l
P C 0 C o n tro l
P C 0 /R E M
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
M U X
P O R T B
P B
S T A T U S
P B 0 ~ P B 1
P B 2 ~ P B 7
S h ifte r
P A
O S C 2
O S
R E
V D
V S
S
P O R T A
P A 0 ~ P A 7
C 1
S
D
A C C
Rev. 1.70
1
July 16, 2003
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
