M30262F8GP#U7 Renesas Electronics America, M30262F8GP#U7 Datasheet - Page 99

• 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 B
Figure 1.13.20. Timer Bi mode register in event counter mode
Table 1.13.7. Timer specifications in event counter mode
(2) Event counter mode
Count source
Count operation
Divide ratio
Count start condition
Count stop condition
Interrupt request generation timing The timer underflows
TBi
Read from timer
Write to timer
In this mode, the timer counts an external signal or an internal timer's overflow. (See Table 1.13.7.)
Figure 1.13.20 shows the timer Bi mode register in event counter mode.
IN
pin function
Item
Timer Bi mode register
b7
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
b6
b5
b4
b3
b2
b1
0 1
b0
• External signals input to TBi
• Effective edge of count source can be a rising edge, a falling edge, or falling
• Counts down
• When the timer underflows, it reloads the reload register contents before
1/(n+1)
Count start flag is set (= 1)
Count start flag is reset (= 0)
Count source input
Count value can be read out by reading timer Bi register
• When counting stopped
• When counting in progress
and rising edges as selected by software
When a value is written to timer Bi register, it is written to both reload register
and counter
When a value is written to timer Bi register, it is written to only reload register
(Transferred to counter at next reload time)
Note 1: Valid only when input from the TBi
Note 3: Timer B1, timer B2.
Note 4: Set the corresponding port direction register to 0 .
Note 2: Timer B0.
Bit symbol
TMOD0
TMOD1
continuing counting
TCK0
TCK1
MR0
MR1
MR2
MR3
Symbol
TBiMR(i=0 to 2)
If timer's overflow is selected, this bit can be 0 or 1 .
Renesas Technology Corp.
Operation mode select bit
0 (Must always be 0 in event counter mode; i = 0)
Count polarity select
bit
Nothing is assigned (i = 1, 2)
In an attempt to write to this bit, write 0 . The value, if read,
turns out to be indeterminate.
Invalid in event counter mode.
In an attempt to write to this bit, write 0 . The value, if read in
event counter mode, turns out to be indeterminate.
Invalid in event counter mode.
Can be 0 or 1 .
Event clock select
(Note 1)
Bit name
039B
n : Set value
Address
16
to 039D
16
Specification
IN
IN
0 1 : Event counter mode
b3 b2
0 0 : Counts external signal's
0 1 : Counts external signal's
1 0 : Counts external signal's
1 1 : Must not be set.
0 : Input from TBi
1 : TBj overflow
b1 b0
pin is selected as the event clock.
pin
When reset
00XX0000
.
(j = i
falling edges
rising edges
falling and rising edges
.
1; however, j = 2 when i = 0)
2
Function
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
IN
pin (Note 4)
(Note 2)
(Note 3)
R
M16C/26 Group
W
91