m37516e6hp Renesas Electronics Corporation., m37516e6hp Datasheet - Page 16

• Manufacturer Part Number: m37516e6hp
• Description: Single-chip 8-bit Cmos Microcomputer
• Manufacturer: Renesas Electronics Corporation.

7516 Group
Fig. 10 Port block diagram (1)
Rev.1.01
( 5 ) P o r t s P 0
( 3 ) P o r t P 0
( 1 ) P o r t P 0
( 7 ) P o r t P 2
Data bus
D a t a b u s
Data bus
Jul 01, 2003
D a t a b u s
S e r i a l I / O 2 s y n c h r o n o u s c l o c k
P 0
S e r i a l I / O 2 p o r t s e l e c t i o n b i t
S e r i a l I / O 2 c l o c k o u t p u t
2
2
/ S
4
0
– P 0
C L K 2
1
Port X
P - c h a n n e l o u t p u t d i s a b l e b i t
7
, P 1 , P 4
Port latch
P o r t l a t c h
D i r e c t i o n
D i r e c t i o n
r e g i s t e r
r e g i s t e r
s e l e c t i o n b i t
C
P o r t l a t c h
Direction
Sub-clock generating circuit input
register
switch bit
Port latch
D i r e c t i o n
r e g i s t e r
page 14 of 89
5
S e r i a l I / O 2 e x t e r n a l c l o c k i n p u t
–P 4
S e r i a l I / O 2 i n p u t
7
(8) Port P2
I
2
(4) Port P0
C - B U S i n t e r f a c e e n a b l e b i t
( 2 ) P o r t P 0
D a t a b u s
SDA/SCL pin selection bit
(6) Port P2
Data bus
Data bus
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
2
P 0
3
S e r i a l I / O 2 p o r t s e l e c t i o n b i t
1
Serial I/O2 ready output
1
Serial I/O2 output
/ S
0
S
Port X
O U T 2
RDY2
Port latch
D i r e c t i o n
r e g i s t e r
P - c h a n n e l o u t p u t
output enable bit
C
Direction
Port latch
Port latch
register
S D A o u t p u t
Direction
register
switch bit
Port latch
D i r e c t i o n
r e g i s t e r
d i s a b l e b i t
P o r t P 2
SDA input
1
P o r t X
O s c i l l a t o r
C
s w i t c h b i t