R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 161

• 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 17.7 Setting and Resetting of EW1 Mode
Figure 17.5 Timing on Suspend Operation
Figure 17.6 Setting and Resetting of EW0 Mode
N O T E S :
1 . S e l e c t 5 M H z o r l e s s f o r C P U c l o c k u s i n g t h e C M 0 6 b i t i n t h e C M 0 r e g i s t e r a n d t h e C M 1 7 t o C M 1 6 b i t s i n t h e C M 1 r e g i s t e r .
2 . T o s e t t h e F M R 0 1 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 w r i t i n g “ 1 ” a f t e r w r i t i n g “ 0 ” .
3 . D i s a b l e s t h e C P U r e w r i t e m o d e a f t e r e x e c u t i n g t h e R e a d A r r a y c o m m a n d .
Figures 17.6 and 17.7 show the setting and resetting of EW0 mode and EW1 mode, respectively.
E W 0 m o d e o p e r a t i o n p r o c e d u r e
Jump to the rewrite control program which has been
transferred to any area other than the flash memory
(The subsequent processing is executed by the
rewrite control program in any area other than the
flash memory)
E W 1 m o d e o p e r a t i o n p r o c e d u r e
Figures 17.5 shows the timing on suspend operation.
Transfer a CPU rewrite mode based rewrite control
program to any area other than the flash memory
W r i t e t o t h e F M R 0 1 b i t f r o m a p r o g r a m i n o t h e r t h a n t h e f l a s h m e m o r y .
Jan 27, 2006
Set CM0 and CM1 registers
S e t t h e F M R 0 1 b i t b y w r i t i n g “ 0 ” a n d t h e n “ 1 ” ( C P U r e w r i t e
m o d e e n a b l e d )
S e t t h e F M R 1 1 b i t b y w r i t i n g “ 0 ” a n d t h e n “ 1 ” ( E W 1 m o d e )
FMR00
FMR46
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Erase
Starts
During Erase
(1 )
E x e c u t e s o f t w a r e c o m m a n d s
( C P U r e w r i t e m o d e d i s a b l e d )
W r i t e “ 0 ” t o t h e F M R 0 1 b i t
Program in ROM
Erase
Suspends
Check that the FMR00 bit is
set to “0”, and that the erase
operation has not ended.
(1)
R e w r i t e c o n t r o l p r o g r a m
Jump to a specified address in the flash memory
S e t t h e F M R 0 1 b i t b y w r i t i n g “ 0 ” a n d t h e n “ 1 ”
( C P U r e w r i t e m o d e e n a b l e d )
Execute the Read Array command
Execute software commands
(CPU rewrite mode disabled)
Write “0” to the FMR01 bit
N O T E S :
1 . T o s e t t h e F M R 0 1 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
w r i t i n g “ 1 ” a f t e r w r i t i n g “ 0 ” .
Erase
Starts
During Erase
(2 )
Erase
Ends
Check the status,
and that the program
ends normally.
(3)
17.4 CPU Rewrite Mode