R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 9

• 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
REJ03B0068-0120
2. Central Processing Unit (CPU)
Figure 2.1 CPU Register
Figure 2.1 shows the CPU registers. The CPU has 13 registers. Of these, R0, R1, R2, R3, A0, A1 and FB
comprise a register bank. Two sets of register banks are provided.
2.1 Data Registers (R0, R1, R2 and R3)
R0 is a 16-bit register for transfer, arithmetic and logic operations. The same applies to R1 to R3. The
R0 can be split into high-order bit (R0H) and low-order bit (R0L) to be used separately as 8-bit data
registers. The same applies to R1H and R1L as R0H and R0L. R2 can be combined with R0 to be
used as a 32-bit data register (R2R0). The same applies to R3R1 as R2R0.
Jan 27, 2006
b31
N O T E S :
1 . A r e g i s t e r b a n k c o m p r i s e s t h e s e r e g i s t e r s . T w o s e t s o f r e g i s t e r b a n k s a r e p r o v i d e d
R2
R 3
page 7 of 25
b15
I P L
b19
b 1 9
T h e 4 - h i g h o r d e r b i t s o f I N T B a r e I N T B H a n d
t h e 1 6 - l o w b i t s o f I N T B a r e I N T B L .
INTBH
b15
b15
b15
b15
R 0 H ( h i g h - o r d e r o f R 0 )
R1H(high-order of R1)
b 8
b7
U
PC
I
INTBL
USP
ISP
F L G
b8 b7
SB
R 2
R 3
F B
A 0
A 1
O
R1L(low-order of R1)
R0L(low-order of R0)
B
S
Z
D
C
b0
b0
b0
b0
b 0
b 0
D a t a r e g i s t e r s
A d d r e s s r e g i s t e r s
F r a m e b a s e r e g i s t e r s
I n t e r r u p t t a b l e r e g i s t e r
P r o g r a m c o u n t e r
User stack pointer
I n t e r r u p t s t a c k p o i n t e r
Static base register
F l a g r e g i s t e r
C a r r y f l a g
Debug flag
Zero flag
S i g n f l a g
R e g i s t e r b a n k s e l e c t f l a g
O v e r f l o w f l a g
I n t e r r u p t e n a b l e f l a g
S t a c k p o i n t e r s e l e c t f l a g
Reserved bit
P r o c e s s o r i n t e r r u p t p r i o r i t y l e v e l
R e s e r v e d b i t
2. Central Processing Unit (CPU)
( 1 )
( 1 )
( 1 )