R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 164
R5F21324ANSP#U1
Manufacturer Part Number
R5F21324ANSP#U1
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Ar
Datasheet
1.R5F21322ANSPU1.pdf
(629 pages)
Specifications of R5F21324ANSP#U1
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
15
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 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
20-LSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 134 of 583
Figure 11.7
11.3.8
11.3.9
When the REIT instruction is executed at the end of an interrupt routine, the FLG register and PC, which have
been saved on the stack, are automatically restored. The program, that was running before the interrupt request
was acknowledged, starts running again.
Registers saved by a program in an interrupt routine should be saved using the POPM instruction or a similar
instruction before executing the REIT instruction.
If two or more interrupt requests are generated while a single instruction is being executed, the interrupt with
the higher priority is acknowledged.
Set bits ILVL2 to ILVL0 to select any priority level for maskable interrupts (peripheral function). However, if
two or more maskable interrupts have the same priority level, their interrupt priority is resolved by hardware,
with the higher priority interrupts acknowledged.
The priority of watchdog timer and other special interrupts is set by hardware.
Figure 11.7 shows the Hardware Interrupt Priority.
Software interrupts are not affected by the interrupt priority. If an instruction is executed, the MCU executes the
interrupt routine.
Returning from Interrupt Routine
Interrupt Priority
Hardware Interrupt Priority
Preliminary specification
Specifications in this manual are tentative and subject to change.
Nov 05, 2008
Voltage monitor 1/comparator A1
Voltage monitor 2/comparator A2
Oscillation stop detection
Peripheral function
Watchdog timer
Address match
Address break
Single step
Reset
High
Low
11. Interrupts
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