R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 160

• 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 17.4 FMR1 and FMR4
F l a s h m e m o r y c o n t r o l r e g i s t e r 1
F l a s h m e m o r y c o n t r o l r e g i s t e r 4
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
1
0
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
NOTES:
1. To set this bit to “1”, write “0” and then “1” (CPU rewrite mode enabled) in succession when the FMR01
2. This bit is set to “0” by setting the FMR01 bit to “0” (CPU rewrite mode disabled).
3. When the FMR01 bit is “1” (CPU rewrite mode enabled), the FMR15 and FMR16 bits are rewritable.
N O T E S :
1 . T o s e t t h i s b i t t o “ 1 ” , w r i t e “ 0 ” a n d t h e n “ 1 ” i n s u c c e s s i o n . M a k e s u r e n o i n t e r r u p t s w i l l o c c u r b e f o r e
2 . T h i s b i t i s v a l i d o n l y w h e n t h e F M R 4 0 b i t i s s e t t o “ 1 ” ( v a l i d ) a n d c a n o n l y b e w r i t t e n b e f o r e e n d i n g a n
Jan 27, 2006
To set this bit to “0”, write “1” and then “0” in succession.
To set this bit to “1”, write “1”.
bit = 1. Make sure no interrupts will occur before writing “1” after writing “0”.
w r i t i n g “ 1 ” a f t e r w r i t i n g “ 0 ” .
e r a s e a f t e r i s s u i n g a n e r a s e c o m m a n d . O t h e r t h a n t h i s p e r i o d , t h i s b i t i s s e t t o “ 0 ” .
I n E W 0 m o d e , t h i s b i t c a n b e s e t t o “ 0 ” a n d “ 1 ” b y p r o g r a m .
I n E W 1 m o d e , t h i s b i t i s a u t o m a t i c a l l y s e t t o “ 1 ” i f a m a s k a b l e i n t e r r u p t o c c u r s d u r i n g a n e r a s e o p e r a t i o n
w h i l e t h e F M R 4 0 b i t i s s e t t o “ 1 ” . T h i s b i t c a n n o t b e s e t t o “ 1 ” b y p r o g r a m . ( C a n b e s e t t o “ 0 ” . )
0
0
0
0 0
0
0
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B i t s y m b o l
Bit symbol
( b 5 - b 2 )
F M R 4 0
F M R 4 1
F M R 4 6
( b 4 - b 2 )
FMR15
F M R 1 6
F M R 1 1
(b0)
(b7)
( b 7 )
Symbol
S y m b o l
FMR1
F M R 4
R e s e r v e d b i t
Read status flag
R e s e r v e d b i t
EW1 mode select bit
Reserved bit
E r a s e - s u s p e n d f u n c t i o n
e n a b l e b i t
Erase-suspend request bit
R e s e r v e d b i t
B l o c k 1 r e w r i t e d i s a b l e b i t
R e s e r v e d b i t
Block0 rewrite disable bit
(1 )
Bit name
Bit name
A d d r e s s
Address
0 1 B 3
01B5
1 6
16
(1, 2)
(2 , 3 )
(2, 3)
(2)
A f t e r r e s e t
0 1 0 0 0 0 0 0
After reset
1000000X
0: Erase restart
1: Erase-suspend request
S e t t o “ 0 ”
0 : D i s a b l e r e a d i n g
1 : E n a b l e r e a d i n g
S e t t o “ 0 ”
0 : I n v a l i d
1 : V a l i d
0: EW0 mode
1: EW1 mode
0 : Rewrite enabled
1 : Rewrite disabled
Set to “1”
Set to “0”
0 : Rewrite enabled
1 : Rewrite disabled
W h e n r e a d , i t s c o n t e n t i s
i n d e t e r m i n a t e .
2
2
Function
F u n c t i o n
17.4 CPU Rewrite Mode
RW
R W
R W
R W
RW
R W
RW
RW
R O
RO
RW
R W
RO