R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 388

MCU 1KB FLASH 16K ROM 32-LQFP

R5F21334CNFP#U0

Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet

Specifications of R5F21334CNFP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 358 of 589
Figure 22.15
22.5.1
Whether a start or a stop condition has been detected is determined.
A start condition detect interrupt request is generated when the SDA2 pin changes state from high to low while
the SCL2 pin is in the high state. A stop condition detect interrupt request is generated when the SDA2 pin
changes state from low to high while the SCL2 pin is in the high state.
Because the start and stop condition detect interrupts share an interrupt control register and vector, check the
BBS bit in the U2SMR register to determine which interrupt source is requesting the interrupt.
Figure 22.15 shows the Detection of Start and Stop Conditions.
Detection of Start and Stop Conditions
5 cycles of f1 < Setting up duration
5 cycles of f1 < Holding duration
Detection of Start and Stop Conditions
(Start condition)
(Stop condition)
SDA2
SDA2
SCL2
Setting up
duration
duration
Holding
22. Serial Interface (UART2)

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