R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 13

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#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: 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: -

11.
12.
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
12.1
12.2
10.1.1
11.1.1
11.1.2
11.1.3
11.1.4
11.1.5
11.2.1
11.2.2
11.2.3
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.3.7
11.3.8
11.3.9
11.3.10 Interrupt Priority Level Selection Circuit ......................................................................................... 136
11.4.1
11.4.2
11.4.3
11.4.4
11.4.5
11.5.1
11.6.1
11.6.2
11.8.1
11.8.2
11.8.3
11.8.4
11.8.5
Interrupts ..................................................................................................................................... 122
ID Code Areas ............................................................................................................................ 149
Overview ............................................................................................................................................... 122
Registers ................................................................................................................................................ 126
Interrupt Control .................................................................................................................................... 130
INT Interrupt ......................................................................................................................................... 137
Key Input Interrupt ................................................................................................................................ 140
Address Match Interrupt ........................................................................................................................ 142
Timer RC Interrupt, Synchronous Serial Communication Unit Interrupt, I
Flash Memory Interrupt (Interrupts with Multiple Interrupt Request Sources) .................................... 144
Notes on Interrupts ................................................................................................................................ 146
Overview ............................................................................................................................................... 149
Functions ............................................................................................................................................... 150
Protect Register (PRCR) ................................................................................................................... 121
Types of Interrupts ............................................................................................................................ 122
Software Interrupts ........................................................................................................................... 123
Special Interrupts .............................................................................................................................. 124
Peripheral Function Interrupts .......................................................................................................... 124
Interrupts and Interrupt Vectors ........................................................................................................ 125
Interrupt Control Register
(TREIC, S2TIC, S2RIC, KUPIC, ADIC, S0TIC, S0RIC, TRAIC, TRBIC, U2BCNIC, VCMP1IC,
VCMP2IC) ........................................................................................................................................ 127
Interrupt Control Register (FMRDYIC, TRCIC, SSUIC/IICIC) ..................................................... 128
INTi Interrupt Control Register (INTiIC) (i = 0, 1, 3) ...................................................................... 129
I Flag ................................................................................................................................................. 130
IR Bit ................................................................................................................................................. 130
Bits ILVL2 to ILVL0, IPL ................................................................................................................ 130
Interrupt Sequence ............................................................................................................................ 131
Interrupt Response Time ................................................................................................................... 132
IPL Change when Interrupt Request is Acknowledged .................................................................... 132
Saving Registers ............................................................................................................................... 133
Returning from Interrupt Routine ..................................................................................................... 135
Interrupt Priority ............................................................................................................................... 135
INTi Interrupt (i = 0, 1, 3) ................................................................................................................. 137
INT Interrupt Input Pin Select Register (INTSR) ............................................................................. 137
External Input Enable Register 0 (INTEN) ...................................................................................... 138
INT Input Filter Select Register 0 (INTF) ........................................................................................ 138
INTi Input Filter (i = 0, 1, 3) ............................................................................................................. 139
Key Input Enable Register 0 (KIEN) ................................................................................................ 141
Address Match Interrupt Enable Register i (AIERi) (i = 0 or 1) ...................................................... 143
Address Match Interrupt Register i (RMADi) (i = 0 or 1) ................................................................ 143
Reading Address 00000h .................................................................................................................. 146
SP Setting .......................................................................................................................................... 146
External Interrupt and Key Input Interrupt ....................................................................................... 146
Changing Interrupt Sources .............................................................................................................. 147
Rewriting Interrupt Control Register ................................................................................................ 148
A - 4
2
C bus Interface Interrupt, and