R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 569
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#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
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 536 of 723
26.2.3
Table 26.3
After Reset
XCSEL Bit (XCIN/XCOUT pin connect bit)
IOINSEL Bit (I/O port input function select bit)
Bit
b0
b1
b2
b3
b4
b5
b6
b7
PDi_j bit in PDi register
Address 018Fh
The XCSEL bit is used to connect XCIN and XCOUT to P4_3 and P4_4, respectively. When this bit is set to 1,
XCIN is connected to P4_3 and XCOUT is connected to P4_4. For how to set XCIN and XCOUT, refer to 9.
Clock Generation Circuit.
The IOINSEL bit is used to select the pin level of an I/O port when the PDi_j (j = 0 to 7) bit in the PDi (i = 0 to
4 or 6) register is set to 1 (output mode). When this bit is set to 1, the I/O port input function reads the pin input
level regardless of the PDi register.
Table 26.3 lists I/O Port Values Read by Using IOINSEL Bit. The IOINSEL bit can be used to change the input
function of all I/O ports except P4_2.
Symbol SDADLY1 SDADLY0 IICTCHALF IICTCTWI IOINSEL
I/O port values read
IICTCHALF I
SDADLY0 SDA digital delay select bit
SDADLY1
IICTCTWI I
IOINSEL
Bit
IOINSEL bit
Symbol
XCSEL
I/O Function Pin Select Register (PINSR)
—
—
I/O Port Values Read by Using IOINSEL Bit
b7
0
XCIN/XCOUT pin connect bit
Reserved bit
Nothing is assigned. If necessary, set to 0. When read, the content is 0.
I/O port input function select bit
2
2
C double transfer rate select bit 0: Transfer rate is the same as the value set with bits
C half transfer rate select bit
b6
0
Bit Name
b5
0
0
0 (input mode)
Pin input level
b4
0
0: XCIN not connected to P4_3, XCOUT not
1: XCIN connected to P4_3, XCOUT connected to
Set to 0.
0: The I/O port input function depends on the PDi (i =
1: The I/O port input function reads the pin input level
1: Transfer rate is twice the value set with bits CKS0
0: Transfer rate is the same as the value set with bits
1: Transfer rate is half the value set with bits CKS0 to
b7 b6
0 0: Digital delay of 3 × f1 cycles
0 1: Digital delay of 11 × f1 cycles
1 0: Digital delay of 19 × f1 cycles
1 1: Do not set.
connected to P4_4
P4_4
0 to 4 or 6) register.
When the PDi_j (j = 0 to 7) bit in the PDi register is
set to 0 (input mode), the pin input level is read.
When the PDi_j bit in the PDi register is set to 1
(output mode), the port latch is read.
regardless of the PDi register.
CKS0 to CKS3 in the ICCR1 register
to CKS3 in the ICCR1 register
CKS0 to CKS3 in the ICCR1 register
CKS3 in the ICCR1 register
b3
0
1
b2
—
0
Port latch value
Function
0
b1
—
0
1 (output mode)
XCSEL
b0
0
26. I
Pin input level
2
C bus Interface
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
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