HT45R34 Datasheet, PDF (2/41 Pages) Holtek Semiconductor Inc – C/R to F Type 8-Bit OTP MCU

Block Diagram
P ro g ra m
ROM
P ro g ra m
C o u n te r
P A 0 /IN T 0
P A 1 /IN T 1
STAC K0
STAC K1
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 a ta
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
M UX
A LU
S h ifte r
S ta tu s
O SC2 O SC1
ACC
RES
VDD
VSS
Pin Assignment
PA3 1
P A 2 /T M R 2
P A 1 /IN T 1 3
P A 0 /IN T 0 4
VSS 5
CREF 6
RREF 7
R C O U T /IN 8
RC1 9
R C 2 10
20 P A 4
19 P A 5
18 P A 6
17 P A 7
16 O S C 2
15 O S C 1
14 V D D
13 R E S
12 R C 12
11 R C 11
H T45R 34
2 0 D IP -A /S O P -A
HT45R34
TM R C
TM R
M
P r e s c a le r S y s te m C lo c k
U
X
P A 2 /T M R
W D TS
W D T P r e s c a le r
W DT
M
U
S y s te m C lo c k /4
X
PAC _{PO RT A}
PA
P A 0 /IN T 0
P A 1 /IN T 1
P A 2 /T M R
P A 3~P A 7
RC O SC
T im e r A
T im e r B
A n a lo g
S w itc h
M
U
X
S y s te m C lo c k
S y s te m C lo c k /4
R C O s c illa tio n O u tp u t
R C 1~R C 12
RCOUT
RC
O s c illa tio n
IN
RREF
CREF
PA3 1
P A 2 /T M R 2
P A 1 /IN T 1 3
P A 0 /IN T 0 4
VSS 5
CREF 6
RREF 7
R C O U T /IN 8
RC1 9
R C 2 10
R C 3 11
R C 4 12
24 ^{P A 4}
23 ^{P A 5}
22 ^{P A 6}
21 ^{P A 7}
20 ^{O S C 2}
19 ^{O S C 1}
18 ^{V D D}
17 ^{R E S}
16 ^{R C 12}
15 ^{R C 11}
14 ^{R C 10}
13 ^{R C 9}
H T45R 34
2 4 S K D IP /S O P -A
Rev. 1.20
2
October 15, 2007