M30262F8GP#U7 Renesas Electronics America, M30262F8GP#U7 Datasheet - Page 86

• 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
78
Timer A
Figure 1.12.3. Block diagram of timer A
Figure 1.12.4. Timer A-related registers (1)
Figure 1.12.3 shows the block diagram of timer A. Figures 1.12.4 to 1.12.6 show the timer A-related
registers.
Except in event counter mode, timers A0 through A4 all have the same function. Use the timer Ai mode
register (i = 0 to 4) bits 0 and 1 to choose the desired mode.
Timer A has the four operation modes listed as follows:
f
TAk overflow
(k = i + 1. Note, however, that k = 0 when i = 4)
TB2 overflow
TAj overflow
(j = i
1
TAi
(i = 0 to 4)
TAi
(i = 0 to 4)
or f
f
• Timer mode: The timer counts an internal count source.
• Event counter mode: The timer counts pulses from an external source or a timer over flow.
• One-shot timer mode: The timer stops counting when the count reaches “0000
• Pulse width modulation (PWM) mode: The timer outputs pulses of a given width.
f
C32
f
8
32
IN
OUT
2
1. Note, however, that j = 4 when i = 0)
Clock source
selection
selection
Polarity
Timer Ai mode register
b7
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
b6
Pulse output
b5
b4
b3
b2
Ä Event counter
Ä Timer
Ä One shot
Ä PWM
Ä Timer
Clock selection
(gate function)
b1
b0
Bit symbol
TMOD0
TMOD1
MR0
MR1
MR2
MR3
TCK0
TCK1
Symbol
TAiMR(i=0 to 4)
To external
trigger circuit
Clock selection
Renesas Technology Corp.
Count source select bit
Function varies with each operation mode
Operation mode select bit
(Address 0384
(Function varies with each operation mode)
Up/down flag
(Address 0380
Count start flag
Down count
Toggle flip-flop
Bit name
0396
Address
16
16
to 039A
)
16
Data bus high-order bits
)
Data bus low-order bits
16
Reload register (16)
When reset
b1 b0
0 0 : Timer mode
0 1 : Event counter mode
1 0 : One-shot timer mode
1 1 : Pulse width modulation
Low-order
8 bits
Counter (16)
00
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(PWM) mode
16
Timer A0 0387
Timer A1 0389
Timer A2 038B
Timer A3 038D
Timer A4 038F
TAi
Up count/down count
Function
Always down count except
in event counter mode
Addresses
16
16
16
16
16
High-order
8 bits
0386
0388
038A
038C
038E
16
16
16
”.
16
16
16
M16C/26 Group
Timer A4
Timer A0
Timer A1
Timer A2
Timer A3
TAj
R
W
Timer A1
Timer A2
Timer A3
Timer A4
Timer A0
TAk