R5F21244SNFP#U0 Renesas Electronics America, R5F21244SNFP#U0 Datasheet - Page 177

• Manufacturer Part Number: R5F21244SNFP#U0
• Description: IC R8C MCU FLASH 16K 52LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/24r

Specifications of R5F21244SNFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 14.18
Figure 14.19
Timer RB I/O Control Register
b7 b6 b5 b4 b3 b2
TSTART bit in TRBCR
Feb 29, 2008
Counter of timer RB
The above applies under the following conditions.
Timer RB prescaler
TOPL bit in TRBIO
0 0
TRBO pin output
underflow signal
TRBPRE = 01h, TRBPR = 01h, TRBSC = 02h
TRBIOC register TOCNT = 0 (timer RB waveform is output from the TRBO pin)
IR bit in TRBIC
Count source
TRBIOC Register in Programmable Waveform Generation Mode
Operating Example of Timer RB in Programmable Waveform Generation Mode
b1 b0
register
register
register
Bit Symbol
Initial output is the same level
as during secondary period.
INOSTG
INOSEG
TRBIOC
(b7-b4)
Symbol
TOCNT
TOPL
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1
0
1
0
1
0
1
0
Timer RB output level select
bit
Timer RB output sw itch bit
One-shot trigger control bit
One-shot trigger polarity
select bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Set to 1 by program
Set to 0 by program
output starts
Waveform
01h
Address
Bit Name
010Ah
Primary period
Timer RB secondary reloads
00h
Waveform output inverted
02h
0 : Outputs “H” for primary period
1 : Outputs “L” for primary period
0 : Outputs timer RB w aveform
1 : Outputs value in P3_1 port latch
Set to 0 in programmable w aveform generation
mode.
Outputs “L” for secondary period
Outputs “L” w hen the timer is stopped
Outputs “H” for secondary period
Outputs “H” w hen the timer is stopped
Secondary period
01h
Timer RB primary reloads
00h
Waveform output starts
After Reset
Function
00h
01h
Primary period
Set to 0 when interrupt
request is acknowledged,
or set by program.
00h
02h
14. Timers
RW
RW
RW
RW
RW
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