R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 32

• Manufacturer Part Number: R5F21122FP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/12r

Specifications of R5F21122FP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/12 Group
Rev.1.20
REJ09B0110-0120
Figure 6.3 OCD Register
O s c i l l a t i o n s t o p d e t e c t i o n r e g i s t e r
0
b 7
N O T E S :
1 . S e t t h e P R C 0 b i t i n t h e P R C R r e g i s t e r t o “ 1 ” ( w r i t e e n a b l e ) b e f o r e r e w r i t i n g t h i s r e g i s t e r .
2 . T h e O C D 2 b i t i s s e t t o “ 1 ” ( s e l e c t i n g o n - c h i p o s c i l l a t o r c l o c k ) a u t o m a t i c a l l y i f a m a i n c l o c k o s c i l l a t i o n s t o p
3 . T h e O C D 3 b i t i s e n a b l e d w h e n t h e O C D 1 t o O C D 0 b i t s a r e s e t t o “ 1 1
4 . T h e O C D 1 t o O C D 0 b i t s m u s t b e s e t t o “ 0 0
5 . T h e O C D 3 b i t r e m a i n s s e t t o “ 0 ” ( m a i n c l o c k o n ) i f t h e O C D 1 t o O C D 0 b i t s a r e s e t t o “ 0 0
6 . T h e C M 1 4 b i t g o e s t o “ 0 ” ( o n - c h i p o s c i l l a t o r o n ) i f t h e O C D 2 b i t i s s e t t o “ 1 ” ( s e l e c t i n g o n - c h i p o s c i l l a t o r
7 . R e f e r t o F i g u r e 6 . 6 “ s w i t c h i n g c l o c k s o u r c e f r o m o n - c h i p o s c i l l a t o r t o m a i n c l o c k ” f o r t h e s w i t c h i n g
b 6
0
Jan 27, 2006
i s d e t e c t e d w h i l e t h e O C D 1 t o O C D 0 b i t s a r e s e t t o “ 1 1
t h e O C D 3 b i t i s s e t t o “ 1 ” ( m a i n c l o c k s t o p ) , t h e O C D 2 b i t r e m a i n s u n c h a n g e d w h e n t r y i n g t o w r i t e “ 0 ”
( s e l e c t i n g m a i n c l o c k ) .
e n a b l e d ) .
s t o p m o d e o r o n - c h i p o s c i l l a t o r m o d e ( m a i n c l o c k s t o p s ) .
c l o c k ) .
p r o c e d u r e w h e n t h e m a i n c l o c k r e - o s c i l l a t e s a f t e r d e t e c t i n g a n o s c i l l a t i o n s t o p .
b 5
0
b 4
0
b 3
b 2
b 1
page 20 of 181
b 0
Bit symbol
( b 7 - b 4 )
O C D 0
O C D 1
O C D 2
O C D 3
S y m b o l
O C D
( 1 )
Oscillation stop
detection enable bit
S y s t e m c l o c k s e l e c t b i t
Clock monitor bit
R e s e r v e d b i t
2
Bit name
” ( o s c i l l a t i o n s t o p d e t e c t i o n f u n c t i o n d i s a b l e d ) b e f o r e e n t e r i n g
A d d r e s s
000C
2
(
3, 5)
” ( o s c i l l a t i o n s t o p d e t e c t i o n f u n c t i o n d i s a b l e d ) . I f
16
(
6 )
After reset
b1 b0
0 0 : T h e f u n c t i o n i s d i s a b l e d
0 1 : A v o i d t h i s s e t t i n g
1 0 : A v o i d t h i s s e t t i n g
1 1 : T h e f u n c t i o n i s e n a b l e d
0 : S e l e c t m a i n c l o c k
1 : S e l e c t o n - c h i p o s c i l l a t o r c l o c k
0 : M a i n c l o c k o n
1 : M a i n c l o c k o f f
Set to "0"
2
0 4
” ( o s c i l l a t i o n s t o p d e t e c t i o n f u n c t i o n
1 6
F u n c t i o n
6. Clock Generation Circuit
(
7 )
2
” .
(
(
7 )
4 )
(
2 )
RW
R W
R W
R W
R O