R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 108

• 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
Figure 12.10
12.1.6.10 Interrupt Priority Judgement Circuit
The interrupt priority judgement circuit selects the highest priority interrupt, as shown in Figure 12.10.
Dec 08, 2006
Interrupt Priority Level Judgement Circuit
Priority level of each interrupt
NOTE :
Oscillation stop detection
1. The IICSEL bit in the PMR register switches functions.
Voltage monitor 2
UART1 transmit
UART0 transmit
SSU / I
Watchdog timer
UART1 receive
UART0 receive
A/D conversion
Address match
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Compare 0
Compare 1
Key input
Timer Z
Timer X
Timer C
INT3
INT0
INT1
I flag
IPL
2
C bus
(1)
Level 0 (default value)
Highest
Lowest
Priority of peripheral function interrupts
(if priority levels are same)
Interrupt request level
judgment output signal
Interrupt
request
acknowledged
12. Interrupts