Renesas PROM Programming Adapters PCA7438F-64A Spezifikationen Seite 41
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38C1 Group
Fig. 43 State transitions of system clock
R
e
s
e
t
r
e
l
e
a
s
e
X
IN
stop
X
CIN
stop
φ=f(ROSC)/8
CM
7=0
CM
6=1 (Note 5)
CM
5=1
CM
4=0
CM
3=1
X
IN
stop
X
CIN
oscillation
φ=f(ROSC)/8
CM
7=0
CM
6=1 (Note 5)
CM
5=1
CM
4=1
CM
3=1
X
I
N
o
s
c
i
l
l
a
t
i
o
n
X
C
I
N
s
t
o
p
φ=
f
(
R
O
S
C
)
/
8
C
M
7=
0
C
M
6=
1
(
N
o
t
e
5
)
C
M
5=
0
C
M
4=
0
C
M
3=
1
X
I
N
o
s
c
i
l
l
a
t
i
o
n
X
C
I
N
o
s
c
i
l
l
a
t
i
o
n
φ=f(ROSC)/8
CM
7=0
CM
6=1(Note 5)
CM
5=0
CM
4=1
CM
3=1
C
M4
C
M4
C
M4
C
M5
C
M5
C
M5
X
IN
stop
X
CIN
oscillation
φ=16kHz
CM
7=1
CM
6=1
CM
5=1
CM
4=1
CM
3=* (Note 9)
X
I
N
o
s
c
i
l
l
a
t
i
o
n
X
C
I
N
o
s
c
i
l
l
a
t
i
o
n
φ=16kHz
CM
7=1
CM
6=0 (Note 5)
CM
5=0
CM
4=1
CM
3= * (Note 9)
C
M6
C
M6
C
M5
C
M5
X
IN
oscillation
X
CIN
stop
φ=1MHz
CM
7=0
CM
6=1
CM
5=0
CM
4=0
CM
3=0
X
IN
oscillation
X
CIN
oscillation
φ=1MHz
CM
7=0
CM
6=1
CM
5=0
CM
4=1
CM
3=0
C
M4
X
I
N
o
s
c
i
l
l
a
t
i
o
n
X
C
I
N
s
t
o
p
φ=
4
M
H
z
C
M
7=
0
C
M
6=
0
(
N
o
t
e
5
)
C
M
5=
0
C
M
4=
0
C
M
3=
0
X
I
N
o
s
c
i
l
l
a
t
i
o
n
X
C
I
N
o
s
c
i
l
l
a
t
i
o
n
φ=4MHz
CM
7=0
CM
6=0 (Note 5)
CM
5=0
CM
4=1
CM
3=0
CM4
CM7
CM7
C
M7
X
IN
oscillation
X
CIN
oscillation
φ=16kHz
CM
7=1
CM
6=1
CM
5=0
CM
4=1
CM
3= * (Note 9)
O
n
-
c
h
i
p
o
s
c
i
l
l
a
t
o
r
m
o
d
e
L
o
w
-
s
p
e
e
d
m
o
d
e
Middle-speed mode
High-speed mode
C
M3
b
7b
3
C
M3
C
M6 CM6
C
M7
N
o
t
e
s
1
: S
w
i
t
c
h
t
h
e
m
o
d
e
b
y
t
h
e
a
r
r
o
w
s
s
h
o
w
n
b
e
t
w
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n
t
h
e
m
o
d
e
b
l
o
c
k
s
.
T
h
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a
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m
o
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c
a
n
b
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s
w
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d
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s
t
o
p
m
o
d
e
o
r
t
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e
w
a
i
t
m
o
d
e
.
2
:
T
i
m
e
r
a
n
d
L
C
D
o
p
e
r
a
t
e
i
n
t
h
e
w
a
i
t
m
o
d
e
.
S
y
s
t
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m
i
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r
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t
u
r
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d
t
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t
h
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s
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u
r
c
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m
o
d
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w
h
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n
t
h
e
w
a
i
t
m
o
d
e
i
s
e
n
d
e
d
.
3
:
C
M
4
,
C
M
5
a
n
d
C
M
6
a
r
e
r
e
t
a
i
n
e
d
i
n
t
h
e
s
t
o
p
m
o
d
e
.
S
y
s
t
e
m
i
s
r
e
t
u
r
n
e
d
t
o
t
h
e
o
n
-
c
h
i
p
o
s
c
i
l
l
a
t
o
r
m
o
d
e
(
C
M
3
=
1
,
C
M
7
=
0
)
.
4
:
W
h
e
n
t
h
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s
t
o
p
m
o
d
e
i
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n
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d
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g
w
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n
-
c
h
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p
o
s
c
i
l
l
a
t
o
r
m
o
d
e
.
5
:
W
h
e
n
t
h
e
s
t
o
p
m
o
d
e
i
s
e
n
d
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d
,
s
e
t
t
h
e
i
n
i
t
i
a
l
v
a
l
u
e
t
o
C
M
6
(
C
M
6
=
1
)
.
6
:
E
x
e
c
u
t
e
t
h
e
t
r
a
n
s
i
t
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o
n
a
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d
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m
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d
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i
s
s
t
a
b
i
l
i
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e
d
.
7
:
W
h
e
n
s
y
s
t
e
m
g
o
e
s
t
o
o
n
-
c
h
i
p
o
s
c
i
l
l
a
t
o
r
m
o
d
e
,
t
h
e
o
s
c
i
l
l
a
t
i
o
n
s
t
a
b
i
l
i
z
i
n
g
w
a
i
t
t
i
m
e
i
s
n
o
t
n
e
e
d
e
d
.
8
:
D
o
n
o
t
g
o
t
o
t
h
e
h
i
g
h
-
s
p
e
e
d
m
o
d
e
f
r
o
m
t
h
e
o
n
-
c
h
i
p
o
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c
i
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l
a
t
o
r
m
o
d
e
.
9
:
W
r
i
t
e
t
h
e
p
r
o
p
e
r
v
a
l
u
e
s
f
o
r
d
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s
t
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n
a
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i
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m
o
d
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b
e
f
o
r
e
h
a
n
d
.
1
0
:
T
h
e
e
x
a
m
p
l
e
a
s
s
u
m
e
s
t
h
a
t
8
M
H
z
i
s
b
e
i
n
g
a
p
p
l
i
e
d
t
o
t
h
e
X
I
N
p
i
n
a
n
d
3
2
k
H
z
t
o
t
h
e
X
C
I
N
p
i
n
.
f
(
R
O
S
C
)
i
n
d
i
c
a
t
e
s
t
h
e
o
s
c
i
l
l
a
t
i
o
n
f
r
e
q
u
e
n
c
y
o
f
o
n
-
c
h
i
p
o
s
c
i
l
l
a
t
o
r
.
Main clock selection bit
0: X
IN
input signal
1: On-chip oscillator
Port Xc switch bit
0: I/O port function (Oscillation stop)
1: X
CIN
, X
COUT
function
X
IN
–X
OUT
oscillation stop bit
0: Oscillating
1: Stopped
Main clock division ratio selection bit
0: f(X
IN
)/2 (high-speed mode)
1: f(X
IN
)/8 (middle-speed mode)
Internal system clock selection bit
0: Main clock selected
(middle-/high-speed and on-chip oscillator mode)
1: X
CIN
–X
COUT
selected
(low-speed mode)
C
P
U
m
o
d
e
r
e
g
i
s
t
e
r
(
C
P
U
M
:
a
d
d
r
e
s
s
0
0
3
B
1
6
,
i
n
i
t
i
a
l
v
a
l
u
e
:
6
8
1
6
)
- 38C1 Group 1
- PIN CONFIGURATION (TOP VIEW) 2
- FUNCTIONAL BLOCK DIAGRAM 3
- PIN DESCRIPTION 4
- PART NUMBERING 5
- GROUP EXPANSION 6
- Memory Type 6
- Memory Size 6
- Packages 6
- I/O PORTS 13
- Pull-up/Pull-down Control 13
- INTERRUPTS 18
- Interrupt Control 18
- Interrupt Operation 18
- Timer 1, Timer 2, Timer 3 24
- ■Note on Timer 1 to Timer 3 24
- Serial I/O 25
- ADKEY Control Circuit 28
- LCD DRIVE CONTROL CIRCUIT 30
- Power Input Pins 32
- LCD Display register 33
- LCD Drive Timing 33
- OTHER FUNCTION REGISTERS 36
- RESET CIRCUIT 37
- N.G. O.K 43
- ROM PROGRAMMING METHOD 45
- DATA REQUIRED FOR MASK ORDERS 45
- ELECTRICAL CHARACTERISTICS 46
- Absolute Maximum Ratings 46
- CIN) < f(XIN)/3 49
- IN), the rating 49
- Electrical Characteristics 50
- IN) ≥ 500 kHz 52
- OUT, XCOUT pins are excluded 54
- PACKAGE OUTLINE 56
- 3 = 1 → CM3 = * (Note 9) 57
- RENESAS SALES OFFICES 59
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