R5F21191SP#U0 Renesas Electronics America, R5F21191SP#U0 Datasheet - Page 212

• Manufacturer Part Number: R5F21191SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/19r

Specifications of R5F21191SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, 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 4x1b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/18 Group, R8C/19 Group
Rev.1.30
REJ09B0222-0130
17.5
17.5.1
Table 17.7
VCC,VSS
RESET
P4_6/XIN
P4_7/XOUT
AVCC, AVSS
P1_0 to P1_7
P3_3 to P3_5
P4_2/VREF
MODE
P3_7
P4_5
In standard serial I/O mode, the user ROM area can be rewritten while the MCU is mounted on-board by
using a serial programmer which is suitable for the MCU.
Standard serial I/O mode is used to connect with a serial programmer using a special clock
asynchronous serial I/O.
There are three standard serial I/O modes:
This MCU uses standard serial I/O mode 2 and standard serial I/O mode 3.
Refer to Appendix 2. Connection Examples between Serial Writer and On-Chip Debugging
Emulator. Contact the manufacturer of your serial programmer for additional information. Refer to the
user’s manual of your serial programmer for details on how to use it.
Table 17.7 lists the Pin Functions (Flash Memory Standard Serial I/O Mode 2), Table 17.8 lists the Pin
Functions (Flash Memory Standard Serial I/O Mode 3). Figure 17.16 shows Pin Connections for
Standard Serial I/O Mode 3.
After processing the pins shown in Table 17.8 and rewriting the flash memory using a programmer, apply
“H” to the MODE pin and reset the hardware to run a program in the flash memory in single-chip mode.
•
•
•
The ID code check function determines whether the ID codes sent from the serial programmer and
those written in the flash memory match (refer to 17.3 Functions to Prevent Rewriting of Flash
Memory).
Standard serial I/O mode 1.......... Clock synchronous serial I/O used to connect with a serial
Standard serial I/O mode 2.......... Clock asynchronous serial I/O used to connect with a serial
Standard serial I/O mode 3.......... Special clock asynchronous serial I/O used to connect with a serial
Pin
Standard Serial I/O Mode
Apr 14, 2006
ID Code Check Function
Pin Functions (Flash Memory Standard Serial I/O Mode 2)
Power input
Reset input
P4_6 input/clock input
P4_7 input/clock output
Analog power supply input I
Input port P1
Input port P3
Input port P4
MODE
TXD output
RXD input
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Name
programmer
programmer
programmer
I
I
I/O
I
I
I
I/O Input “L”.
O
I
I/O
Apply the voltage guaranteed for programming and
erasure to the VCC pin and 0 V to the VSS pin.
Reset input pin.
Connect a ceramic resonator or crystal oscillator
between pins XIN and XOUT.
Connect AVSS to VSS and AVCC to VCC, respectively.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Input “H” or “L” level signal or leave the pin open.
Serial data output pin.
Serial data input pin.
Description
17. Flash Memory Version