m38039mf-xxxsp Mitsumi Electronics, Corp., m38039mf-xxxsp Datasheet - Page 24

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

Fig. 19 Port block diagram of 3804 group (1)
24
(7) Ports P3
Data bus
(1) Ports P0, P6
(3) Ports P1
( 5 ) P o r t s P 3
S e r i a l I / O e n a b l e b i t
Transmit enable bit
Data bus
D a t a b u s
D a t a b u s
5
2
, P4
2
I 2 C-BUS interface enable bit
, P 3
to P1
Serial I/O output
P o r t l a t c h
D i r e c t i o n
r e g i s t e r
5
3
7
, P2
Port latch
SDA output
D i r e c t i o n
SCL output
r e g i s t e r
Direction
P o r t l a t c h
Direction
Port latch
register
register
P u l l - u p c o n t r o l b i t
P u l l - u p c o n t r o l b i t
Pull-up control bit
P - c h a n n e l o u t p u t
A - D c o n v e r t e r i n p u t
d i s a b l e b i t
S D A i n p u t
S C L i n p u t
A n a l o g i n p u t p i n
s e l e c t i o n b i t
Data bus
S e r i a l I / O m o d e s e l e c t i o n b i t
(6) Ports P3
(8) Ports P3
(2) Ports P1
(4) Ports P3
Serial I/O synchronous clock
Data bus
S e r i a l I / O e n a b l e b i t
Serial I/O enable bit
Serial I/O enable bit
Receive enable bit
D a t a b u s
Data bus
4
6
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
0
0
, P4
, P4
, P1
, P3
selection bit
D i r e c t i o n
Port latch
r e g i s t e r
S e r i a l I / O c l o c k o u t p u t
4
6
1
1
D i r e c t i o n
Port latch
r e g i s t e r
, P4
2
MITSUBISHI MICROCOMPUTERS
, P4
Direction
P o r t l a t c h
Direction
Port latch
register
register
P u l l - u p c o n t r o l b i t
P u l l - u p c o n t r o l b i t
S e r i a l I / O e x t e r n a l c l o c k i n p u t
3
, P5
D - A c o n v e r t e r o u t p u t
Pull-up control bit
Pull-up control bit
Interrupt input
3803/3804 Group
7
Serial I/O input
DA
DA
1
2
output enable (P3
output enable (P3
0
1
)
)