HT48R502 Datasheet, PDF (2/39 Pages) Holtek Semiconductor Inc – I/O Type 8-Bit OTP MCU

Block Diagram
P ro g ra m
ROM
IN T
P ro g ra m
C o u n te r
STAC K
In te rru p t
C ir c u it
IN T C
In s tr u c tio n
R e g is te r
MP
M
U
X
D ATA
M e m o ry
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
In te rn a l
RC O SC
HT48R502
TM R 1C
TM R 1L
TM R 1H
M
U
X
M
U
X
fS Y S /4
TM R 1
TM R 0C
TM R 0L
TM R 0H
M
U
X
M
fS Y S /4
U
TM R 0
X
E N /D IS
W D TS
M
W D T P r e s c a le r
W DT
U
X
fS Y S /4
PAC _{PO RT A}
PA
B Z /B Z
PBC _{PO RT B}
PB
W DT O SC
P A 0~P A 7
P B 0~P B 7
PCC _{PO RT C}
PC
P C 0~P C 7
PDC _{PO RT D}
PD
PEC _{PO RT E}
PE
P D 0~P D 7
P E 0~P E 7
PFC _{PO R T F}
PF
P F0~P F7
PG C _{PO RT G}
PG
P G 0~P G 7
R TC O SC
Rev. 1.00
2
September 27, 2006