m37516e6hp Renesas Electronics Corporation., m37516e6hp Datasheet - Page 12

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

7516 Group
[CPU Mode Register (CPUM)] 003B
The CPU mode register contains the stack page selection bit, etc.
The CPU mode register is allocated at address 003B
Fig. 7 Structure of CPU mode register
Rev.1.01
Jul 01, 2003
b 7
page 10 of 89
1
16
16
.
b 0
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
P r o c e s s o r m o d e b i t s
S t a c k p a g e s e l e c t i o n b i t
F i x t h i s b i t t o “ 1 ” .
Port X
Main clock (X
Main clock division ratio selection bits
b 1 b 0
b7 b6
0 0 : S i n g l e - c h i p m o d e
0 1 :
1 0 :
1 1 :
0 : 0 p a g e
1 : 1 p a g e
0 : I/O port function (stop oscillating)
1 : X
0 : Oscillating
1 : Stopped
0
0
1
1
C
0 :
1 :
0 :
1 : Not available
CIN
switch bit
–X
= f(X
= f(X
= f(X
COUT
IN
0 0 3 B
N o t a v a i l a b l e
–X
IN
IN
CIN
OUT
)/2 (high-speed mode)
)/8 (middle-speed mode)
oscillating function
)/2 (low-speed mode)
1 6
) stop bit
)