R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 176

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

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: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 146 of 589
Figure 11.8
11.3.10 Interrupt Priority Level Selection Circuit
The interrupt priority level selection circuit is used to select the highest priority interrupt.
Figure 11.8 shows the Interrupt Priority Level Selection Circuit.
Interrupt Priority Level Selection Circuit
Note:
UART2 bus collision detection
1. Selectable by the IICSEL bit in the SSUIICSR register.
Priority level of interrupts
Oscillation stop detection
UART2 transmit/NACK2
UART2 receive/ACK2
Flash memory ready
Voltage monitor 1
Voltage monitor 2
Voltage monitor 1
Voltage monitor 2
UART0 transmit
SSU / I
UART1 transmit
Watchdog timer
UART1 receive
UART0 receive
A/D conversion
Address match
Timer RB
Timer RA
Timer RC
Timer RE
Key input
INT3
INT0
INT1
I flag
IPL
2
C bus
(1)
Level 0 (initial value)
Highest
Lowest
Peripheral function interrupt priority
(if the priority levels are same)
Interrupt request level
selection output signal
Interrupt request
acknowledgement
11. Interrupts