HT48CA6 Datasheet, PDF (1/31 Pages) Holtek Semiconductor Inc – 8-Bit Remote Type Low Voltage Mask MCU

HT48CA6
8-Bit Remote Type Low Voltage Mask MCU
Features
· Operating voltage: 1.8V~3.6V
· Ten bidirectional I/O lines
· Six Schmitt trigger input lines
· One carrier output, 1/2 or 1/3 duty with high sink cur-
rent capability
· On-chip crystal and RC oscillator
· Watchdog Timer
· 1K´14 program ROM
· 32´8 data RAM
· HALT function and wake-up feature reduce power
consumption
· 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
General Description
The HT48CA6 is an 8-bit high performance RISC-like
microcontroller specifically designed for multiple I/O
product applications. The device is particularly suitable
Block Diagram
for use in products such as remote controllers, toys and
various subsystem controllers. A HALT feature is in-
cluded to reduce power consumption.
P ro g ra m
ROM
P ro g ra m
C o u n te r
STAC K
In s tr u c tio n
R e g is te r
MP
M
U
D ATA
M e m o ry
X
S Y S C L K /4
. r e q u e n c y D iv id e r
W DT
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 ecoder
T im in g
G e n e ra to r
O SC2
O SC1
RES
VDD
VSS
M UX
A LU
S h ifte r
STATU S
ACC
PO RT B
PB
P B 0~P B 1
P B 2~P B 7
PA
PO RT A
P A 0~P A 7
Rev. 1.10
1
July 26, 2002