R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 138

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, 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 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
Figure 14.9
Timer X Mode Register
b7 b6 b5 b4
NOTES :
1.
2.
3. Refer to 14.1.6 Notes on Tim er X for precautions regarding the TXS bit.
1 0
The IR bit in the INT1IC register may be set to 1 (requests interrupt) w hen the R0EDG bit is rew ritten.
Refer to 12.5.5 Changing Interrupt Sources.
This bit is set to 0 by w riting 0 in a program. (It remains unchanged even if w riting 1.)
Dec 08, 2006
b3 b2
TXMR Register in Pulse Period Measurement Mode
b1 b0
0 0
Bit Symbol
TXMOD0
TXMOD1
TXOCNT
TXMOD2
TXEDG
TXUND
Symbol
R0EDG
TXMR
TXS
Page 120 of 315
(2)
(2)
Operating mode select bits 0, 1
_____
INT1
polarity sw itch bit
Timer X count start flag
Set to 0 in pulse w idth measurement mode.
Operating mode select bit 2
Active edge judgment flag
Timer X underflow flag
/CNTR0 signal
Address
Bit Name
008Bh
(1)
(3)
b1 b0
0 0 : Timer mode or pulse period measurement
[CNTR0]
0 : Measures measured pulse from one
1 : Measures measured pulse from one
______
[INT1]
0 : Rising edge
1 : Falling edge
0 : Stops counting.
1 : Starts counting.
1 : Pulse period measurement mode
0 : Active edge not received
1 : Active edge received
0 : No underflow
1 : Underflow
rising edge to next rising edge.
falling edge to next falling edge.
mode
After Reset
Function
00h
14. Timers
RW
RW
RW
RW
RW
RW
RW
RW
RW