M30262F8GP#U7 Renesas Electronics America, M30262F8GP#U7 Datasheet - Page 94

• Manufacturer Part Number: M30262F8GP#U7
• Description: IC M16C/TINY MCU FLASH 48LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/Tiny/26r

Specifications of M30262F8GP#U7

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 38
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Timer A
86
Table 1.12.5. Timer specifications in pulse width modulation mode
Figure 1.12.13. Timer Ai mode register in pulse width modulation mode
(4) Pulse width modulation (PWM) mode
Count source
Count operation
16-bit PWM
8-bit PWM
Count start condition
Count stop condition
Interrupt request generation timing
TAi
TAi
Read from timer
Write to timer
In this mode, the timer outputs pulses of a given width in succession. (See Table 1.12.5.) In this mode, the
counter functions as either a 16-bit pulse width modulator or an 8-bit pulse width modulator. Figure 1.12.13
shows the timer Ai mode register in pulse width modulation mode. Figure 1.12.14 shows the example of
how a 16-bit pulse width modulator operates. Figure 1.12.15 shows the example of how an 8-bit pulse width
modulator operates.
IN
OUT
pin function
Timer Ai mode register
b7
pin function
Item
b6
Preliminary Specifications Rev. 0.9
b5
Specifications in this manual are tentative and subject to change.
b4
b3
b2
1
b1
1
b0
1
f
• The timer counts down (operating as an 8-bit or a 16-bit pulse width modulator)
• The timer reloads a new count at a rising edge of PWM pulse and continues counting
• The timer is not affected by a trigger that occurs when counting
• Cycle time(2
• High level width
• Cycle time (2
• External trigger is input
• The timer overflows
• The count start flag is set (= 1)
PWM pulse goes “L”
Programmable I/O port or trigger input
Pulse output
• When counting stopped
• When counting in progress
High level width
• The count start flag is reset (= 0)
When timer Ai register is read, it indicates an indeterminate value
Note 1: Valid only when the TA
Note 2: Set the corresponding port direction register to 0 .
1
, f
Bit symbol
When a value is written to timer Ai register, it is written to both reload
When a value is written to timer Ai register, it is written to only reload register
(Transferred to counter at next reload time)
TMOD0
TMOD1
2
TCK0
TCK1
MR0
MR1
MR2
MR3
, f
register and counter
8
(addresses 0382
, f
Symbol
TAiMR(i=0 to 4)
32
, f
Operation mode
select bit
1 (Must always be 1 in PWM mode)
External trigger select
bit (Note 1)
16/8-bit PWM mode
select bit
Trigger select bit
Count source select bit
C32
Renesas Technology Corp.
8
16
-1)
-1) / fi fixed
Bit name
16
and 0383
0396
n / fi
n (m+1) / fi
iIN
Address
16
(m+1) / fi
pin is selected by the event/trigger select bit
to 039A
16
). If timer overflow is selected, this bit can be 1 or 0 .
n : Set value
Specification
1 1 : PWM mode
0: Falling edge of TAi
1: Rising edge of TAi
0 0 :
0 1 : f
1 0 : f
1 1 : f
b1 b0
0: Count start flag is valid
1: Selected by event/trigger select bits
0: Functions as a 16-bit pulse width modulator
1: Functions as an 8-bit pulse width modulator
b7 b6
16
n : values set to timer Ai register’s high-order address
f
When reset
1
8
32
C32
m : values set to timer Ai register’s low-order address
or f
00
2
16
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Function
IN
IN
pin's input signal (Note 2)
pin's input signal (Note 2)
M16C/26 Group
R
W