R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 299
R5F2121AJFP#U0
Manufacturer Part Number
R5F2121AJFP#U0
Description
MCU FLASH 96K 5K CMOS 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/21r
Datasheet
1.R5F21216JFP.pdf
(503 pages)
Specifications of R5F2121AJFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
96KB (96K x 8)
Program Memory Type
FLASH
Ram Size
5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
15.3
•
•
Example (when reading receive buffer register):
Example (when reading transmit buffer register):
When reading data from the UiRB (i = 0 or 1) register even in the clock asynchronous serial I/O mode or in the
clock synchronous serial I/O mode. Ensure to read data in 16-bit unit. When the high-order byte of the UiRB
register is read, the PER and FER bits in the UiRB register and the RI bit in the UiC1 register are set to 0.
To check receive errors, read the UiRB register and then use the read data.
When writing data to the UiTB register in the clock asynchronous serial I/O mode with 9-bit transfer data
length, write data high-order byte first, then low-order byte in 8-bit units.
Notes on Serial Interface
MOV.W
MOV.B
MOV.B
00A6H,R0
#XXH,00A3H ; Write the high-order byte of U0TB register
#XXH,00A2H ; Write the low-order byte of U0TB register
Page 281 of 458
; Read the U0RB register
15. Serial Interface
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