參數(shù)資料
型號: R5F21154DDD
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, MICROCONTROLLER, PDIP20
封裝: 0.300 INCH, 1.78 MM PITCH, PLASTIC, SDIP-20
文件頁數(shù): 3/36頁
文件大小: 650K
代理商: R5F21154DDD
Rev.0.10
Sep 06, 2004
Page 11 of 34
REJ03B0102-0010Z
Under development
R8C/14, R8C/15 Group
2. Central Processing Unit (CPU)
Preliminary specification
Specifications in this manual are tentative and subject to change.
2.
Central Processing Unit (CPU)
Figure 2.1 shows the CPU Register. The CPU contains 13 registers. Of these, R0, R1, R2, R3, A0, A1 and
FB comprise a register bank. Two sets of register banks are provided.
Figure 2.1
CPU Register
R2
b31
b15
b8b7
b0
Data Registers (1)
Address Registers (1)
R3
R0H (high-order of R0)
R2
R3
A0
A1
INTBH
b15
b19
b0
INTBL
FB
Frame Bass Register (1)
The 4-high order bits of INTB are INTBH and
the 16-low bits of INTB are INTBL.
Interrupt Table Register
b19
b0
USP
Program Counter
ISP
SB
User Stack Pointer
Interrupt Stack Pointer
Static Base Register
PC
FLG
Flag Register
Carry Flag
Debug Flag
Zero Flag
Sign Flag
Register Bank Select Flag
Overflow Flag
Interrupt Enable Flag
Stack Pointer Select Flag
Reserved Area
Processor Interrupt Priority Level
Reserved Area
C
IPL
D
Z
S
B
O
I
U
b15
b0
b15
b0
b15
b0
b8
b7
NOTES:
1. A register bank comprises these registers. Two sets of register banks are provided
R0L (low-order of R0)
R1H (high-order of R1)
R1L (low-order of R1)
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