R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 57
R5F21133DFP
Manufacturer Part Number
R5F21133DFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5F21133DFP.pdf
(224 pages)
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Part Number
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Quantity
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Company:
Part Number:
R5F21133DFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/13 Group
Rev.1.20
REJ09B0111-0120
9. Bus
Table 9.1 Bus Cycles for Access Space
Table 9.2 Access Unit and Bus Operation
Access space
SFR/Data flash
Program ROM/RAM
Even address
byte access
Odd address
byte access
Even address
word access
Odd address
word access
During access, the ROM/RAM and the SFR have different bus cycles. Table 9.1 shows bus cycles for
access space.
The ROM/RAM and SFR are connected to the CPU through an 8-bit bus. When accessing in word (16
bits) units, these spaces are accessed twice in 8-bit units. Table 9.2 shows bus cycles in each access
space.
Space
Jan 27, 2006
CPU clock
CPU clock
CPU clock
CPU clock
Address
Data
Address
Data
Address
Data
Address
Data
page 46 of 205
2 CPU clock cycles
1 CPU clock cycles
Bus cycle
SFR, Data flash
Even
Odd
Data
Data
Even
Odd
Even+1
Odd+1
Data
Data
Data
Data
CPU clock
CPU clock
CPU clock
CPU clock
Address
Data
Address
Data
Address
Data
Address
Data
Program ROM/RAM
Even
Even
Odd
Odd
Data
Data
Data
Data
Even+1
Odd+1
Data
Data
9. Bus
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