M30800SFP-BL#U5 Renesas Electronics America, M30800SFP-BL#U5 Datasheet - Page 92

• Manufacturer Part Number: M30800SFP-BL#U5
• Description: MCU 3/5V 0K,PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/80r

Specifications of M30800SFP-BL#U5

• Core Processor: M16C/80
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

M
R
R
e
E
1
v
J
6
Figure 10.2 Watchdog timer control and start registers
1 .
0
C
9
0 .
8 /
B
0
0
0
1
b7
b 7 b 6 b 5 b4 b 3 b 2 b 1 b 0
A
Watchdog timer control register
Watchdog timer start register
S y s t e m c l o c k c o n t r o l r e g i s t e r 0 ( N o t e 1 )
G
b7
8
N o t e 5 : W h e n e n t e r i n g t h e p o w e r s a v i n g m o d e , t h e m a i n c l o c k i s s t o p p e d u s i n g t h i s b i t . T o s t o p t h e m a i n
N o t e 6 : W h e n t h i s b i t i s " 1 " , X
N o t e 1 : S e t b i t 0 o f t h e p r o t e c t r e g i s t e r ( a d d r e s s 0 0 0 A
N o t e 2 : W h e n o u t p u t t i n g B C L K ( b i t 7 o f p r o c e s s o r m o d e r e g i s t e r 0 i s " 0 " ) , s e t t h e s e b i t s t o " 0 0 " . W h e n
N o t e 3 : W h e n s e l e c t i n g f
N o t e 4 : C h a n g e s t o “ 1 ” w h e n s h i f t i n g t o s t o p m o d e o r r e s e t .
N o t e 7 : W h e n t h e m a i n c l o c k i s s t o p p e d , t h e m a i n c l o c k d i v i s i o n r e g i s t e r ( a d d r e s s 0 0 0 C
N o t e 8 : W h e n " 1 " h a s b e e n s e t o n c e , " 0 " c a n n o t b e w r i t t e n b y s o f t w a r e .
N o t e 9 : T o s e t C M 0 7 " 1 " f r o m " 0 " , f i r s t s e t C M 0 4 t o " 1 " , a n d a n o s c i l l a t i o n o f s u b c l o c k i s s t a b l e . T h e n s e t
N o t e 1 0 : f c
N o t e 1 1 : W h e n X c
u
7
o r
. g
0 -
b6
0
u
1
0
p
0
b5
, 2
0
0
c l o c k , s e t s y s t e m c l o c k s t o p b i t ( C M 0 7 ) t o " 1 " w h i l e a n o s c i l l a t i o n o f s u b c l o c k i s s t a b l e . T h e n s e t t h i s
b i t t o " 1 " .
u p t o X
o u t p u t t i n g A L E t o P 5
p o r t P 5
m o d e a n d b i t 7 o f t h e p r o c e s s o r m o d e r e g i s t e r 0 i s " 1 " .
d i v i s i o n b y 8 m o d e .
C M 0 7 . A l s o , t o s e t C M 0 7 " 0 " f r o m " 1 " , f i r s t s e t C M 0 5 t o " 1 " , a n d a n o s c i l l a t i o n o f m a i n c l o c k i s
s t a b l e . T h e n s e t C M 0 7 . D o n o t r e w r i t e C M 0 4 a n d C M 0 5 s i m u l t a n e o u s l y .
2
b4
0
3 2
0
b3
5
i s n o t i n c l u d e d .
Page 79
O U T
3
b2
f u n c t i o n i s n o t s e l e c t e d e v e n w h e n y o u s e t " 0 0 " i n m i c r o p r o c e s s o r o r m e m o r y e x p a n s i o n
I N
b1
( " H " l e v e l ) v i a t h e f e e d b a c k r e s i s t a n c e .
- X c
b0
b0
O U T
C
The watchdog timer is initialized and starts counting after a write instruction to
this register. The watchdog timer value is always initialized to “7FFF
regardless of whatever value is written.
B i t s y m b o l
, f
CM01
C M 0 2
CM03
C M 0 4
C M 0 5
C M 0 7
Bit symbol
C M 0 0
C M 0 6
High-order bit of watchdog timer
Reserved bit
WDC7
f o
8
i s u s e d , s e t p o r t P 8
3
S y m b o l
C M 0
Symbol
O U T
o r f
Symbol
3
( b i t 5 a n d 4 o f p r o c e s s o r m o d e r e g i s t e r 0 i s " 0 1 " ) , s e t t h e s e b i t s t o " 0 0 " . T h e
WDTS
WDC
2
3 2
9
i s " H " . A l s o , t h e i n t e r n a l f e e d b a c k r e s i s t a n c e r e m a i n s O N , s o X
i n s i n g l e c h i p m o d e , m u s t u s e P 5
XCIN-XCOUT drive capacity
select bit (Note 4)
W a t c h d o g t i m e r f u n c t i o n
s e l e c t b i t
Clock output function
select bit (Note 2)
W A I T p e r i p h e r a l f u n c t i o n
c l o c k s t o p b i t
P o r t X C s e l e c t b i t
Main clock (XIN-XOUT)
stop bit (Note 5, 6)
S y s t e m c l o c k s e l e c t b i t
( N o t e 9 )
Prescaler select bit
B i t n a m e
Bit name
6
a n d P 8
A d d r e s s
0 0 0 6
Address
Address
000E
000F
1 6
1 6
) t o “ 1 ” b e f o r e w r i t i n g t o t h i s r e g i s t e r .
7
16
16
Function
t o n o p u l l - u p r e s i s t a n c e w i t h t h e i n p u t p o r t .
W h e n r e s e t
Indeterminate
0 : W a t c h d o g t i m e r i n t e r r u p t
1 : R e s e t ( N o t e 8 )
b 1 b 0
0 0 : I/O port P53
0 1 : fC output (Note 3)
1 0 : f8 output (Note 3)
1 1 : f32 output (Note 3)
0 : D o n o t s t o p p e r i p h e r a l c l o c k i n w a i t
1 : S t o p p e r i p h e r a l c l o c k i n w a i t m o d e
0 : L O W
1 : H I G H
0 : I / O p o r t
1 : X
0 : On
1 : Off (Note 7)
0 : X
1 : X
When reset
000XXXXX
When reset
Must always be set to “0”
0 : Divided by 16
1 : Divided by 128
0 8
m o d e
( N o t e 1 0 )
C I N
I N
C I N
1 6
7
, X
- X
, X
a s i n p u t p o r t .
O U T
C O U T
C O U T
2
Function
Function
g e n e r a t i o n ( N o t e 1 1 )
1 6
16
) i s s e t t o t h e
”
10. Watchdog Timer
I N
R
R
R
i s p u l l e d
W
W
W