R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 75

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
9.
The bus cycles differ when accessing ROM/RAM, and when accessing SFR. Table 9.1 lists Bus Cycles by Access
Space of the R8C/1A Group and Table 9.2 lists Bus Cycles by Access Space of the R8C/1B Group.
ROM/RAM and SFR are connected to the CPU by an 8-bit bus. When accessing in word (16-bit) units, these areas are
accessed twice in 8-bit units. Table 9.3 lists Access Units and Bus Operations.
Table 9.1
Table 9.2
Table 9.3
SFR
ROM/RAM
SFR/data flash
Program ROM/RAM
Bus
Even address
Even address
Word access
Odd address
Word access
Byte access
Odd address
Byte access
Access Area
Access Area
Area
Dec 08, 2006
Bus Cycles by Access Space of the R8C/1A Group
Bus Cycles by Access Space of the R8C/1B Group
Access Units and Bus Operations
CPU clock
CPU clock
CPU clock
CPU clock
Address
Address
Address
Address
Data
Data
Data
Data
Page 57 of 315
2 cycles of CPU clock
1 cycle of CPU clock
2 cycles of CPU clock
1 cycle of CPU clock
SFR, data flash
Odd
Even
Bus Cycle
Bus Cycle
Data
Data
Even
Odd
Even+1
Odd+1
Data
Data
Data
Data
CPU clock
CPU clock
CPU clock
CPU clock
Address
Address
Address
Address
Data
Data
Data
Data
ROM (program ROM), RAM
Odd
Even
Odd
Even
Data
Data
Data
Data
Even+1
Odd+1
Data
Data
9. Bus