R5F21122FP#U0 Renesas Electronics America, R5F21122FP#U0 Datasheet - Page 44

• 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
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 32 of 181
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