R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 105

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 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: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
13.1.3
Table 13.4
Count Source
Count Operation
Division Ratio
Count Start Condition
Count Stop Condition
Interrupt Request
Generation Timing
INT10/CNTR00,
INT11/CNTR01 Signal
Pin Function
CNTR0 Pin Function
Read from Timer
Write to Timer
Select Function
Event counter mode is mode to count an external signal which inputs from the INT1/CNTR0 pin (See
Table 13.4 Specification of Event Counter Mode). Figure 13.6 shows TXMR Register in Event
Counter Mode.
Jan 19, 2006
Event Counter Mode
Item
Specification of Event Counter Mode
Page 90 of 254
• When writing to the TX and PREX registers while the count stops, the value
External signal which is input to CNTR0 pin (Active edge is selectable by
software)
• Decrement
• When the timer underflows, the contents in the reload register is reloaded
1/(n+1)(m+1) n: setting value of PREX register, m: setting value of TX register
Write “1” (count starts) to the TXS bit in the TXMR register
Write “0” (count stops) to the TXS bit in the TXMR register
• When Timer X underflows [Timer X interrupt]
Count source input (INT1 interrupt input)
Programmable I/O port
The count value can be read by reading the TX and PREX registers.
• When writing to the TX and PREX registers during the count, the value is
• INT1/CNTR0 signal polarity switch function
• Count source input pin select function
and the count is inherited
is written to both the reload register and counter.
written to each reload register of the TX and PREX registers at the following
count source input and the data is transferred to the counter at the second
count source input and the count re-starts at the third count source input.
The R0EDG bit can select the active edge of the count source.
The CNTRSEL bit in the UCON register can select the CNTR00 or CNTR01
pin
Specification
13. Timers