m38039mf-xxxsp Mitsumi Electronics, Corp., m38039mf-xxxsp Datasheet - Page 25

• Manufacturer Part Number: m38039mf-xxxsp
• Description: Single-chip 8-bit Cmos Microcomputer
• Manufacturer: Mitsumi Electronics, Corp.

Fig. 20 Port block diagram of 3804 group (2)
( 9 ) P o r t P 3
( 1 1 ) P o r t P 4
( 1 3 ) P o r t P 5
Data bus
Data bus
S
D a t a b u s
R D Y 3
S e r i a l I / O 3 e n a b l e b i t
S e r i a l I / O 3 m o d e
o u t p u t e n a b l e b i t
Port X
S e r i a l I / O 3 r e a d y o u t p u t
s e l e c t i o n b i t
7
1
0
Sub-clock generating circuit input
C
switch bit
Port latch
Direction
Port latch
Direction
register
P o r t l a t c h
D i r e c t i o n
register
r e g i s t e r
P u l l - u p c o n t r o l b i t
Pull-up control bit
P u l l - u p c o n t r o l b i t
INT
Serial I/O2 input
00
interrupt input
S e r i a l I / O 2 t r a n s m i t c o m p l e t i o n s i g n a l
Data bus
(10) Port P4
(12) Port P4
(14) Port P5
Serial I/O1 mode selection bit
Data bus
Serial I/O2 port selection bit
S
Data bus
RDY1
Serial I/O1 enable bit
Serial I/O1 ready output
output enable bit
0
7
1
Port X
Port latch
Direction
register
Serial I/O2 output
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
C
switch bit
Timer output
Port latch
Direction
register
Direction
Port latch
register
Pull-up control bit
Pulse output mode
MITSUBISHI MICROCOMPUTERS
Pull-up control bit
Pull-up control bit
INT
CNTR
3803/3804 Group
P o r t P 4
40
interrupt input
2
interrupt input
P o r t X
1
O s c i l l a t o r
C
s w i t c h b i t
P-channel output
disable bit
25