M30803FGFP#U3 Renesas Electronics America, M30803FGFP#U3 Datasheet - Page 122
![MCU 3/5V 256K I-TEMP PB-FREE 100](/photos/12/21/122166/qfp100-g1_pkg_sml.jpg)
M30803FGFP#U3
Manufacturer Part Number
M30803FGFP#U3
Description
MCU 3/5V 256K I-TEMP PB-FREE 100
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/80r
Datasheet
1.M30803FGGPU3.pdf
(360 pages)
Specifications of M30803FGFP#U3
Core Processor
M16C/80
Core Size
16-Bit
Speed
20MHz
Connectivity
SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
85
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
20K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 10x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Table 14.2 Timer specifications in event counter mode
Figure 14.5 Timer Bi mode register in event counter mode
1 .
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
0
C
(2) Event counter mode
9
0 .
8 /
B
In this mode, the timer counts an external signal or an internal timer's overflow. (See Table 14.2) Figure
14.5 shows the timer Bi mode register in event counter mode.
0
IN
0
0
1
A
pin function
8
G
Timer Bi mode register
b7
u
7
o r
. g
0 -
b6
u
1
0
Item
p
0
, 2
b5
0
2
b4
0
0
b3
5
Page 109
b2
Note 1: Valid only when input from the TBi
Note 2: Timer B0, timer B3.
Note 3: Timer B1, timer B2, timer B4, timer B5.
Note 4: Set the corresponding function select register A to I/O port, and port direction register to “0”.
b1
0 1
b0
If timer's overflow is selected, this bit can be “0” or “1”.
• External signals input to TBi
• TBi overflows or underflows
• 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)
Programable I/O port or Count source input (Set the corresponding function
select register A to I/O port.)
Count value can be read out by reading timer Bi register
• When not counting
• When counting
Bit symbol
Effective edge of count source can be a rising edge, a falling edge, or falling
and rising edges as selected by software
continuing counting
Value written to timer Bi register is written to both reload register and counter
Value written to timer Bi register is written to only reload register
(Transferred to counter at next reload time)
TMOD0
TMOD1
TCK0
TCK1
MR0
MR1
MR2
MR3
f o
Symbol
TBiMR(i = 0 to 5) 035B
3
2
9
0 (Set to “0” in event counter mode; i = 0, 3)
Invalid in event counter mode.
When write, set "0". When read in event counter mode, its
content is indeterminate.
Event clock select
Operation mode
select bit
Count polarity select
bit
Nothing is assigned (i = 1, 2, 4, 5).
When write, set "0". When read, its content is indeterminate.
Invalid in event counter mode.
Can be “0” or “1”.
(Note 1)
Bit name
031B
n : Set value
Address
16
16
to 035D
to 031D
IN
pin is selected as the event clock.
b3 b2
b1 b0
0 1 : Event counter mode
0 0 : Counts external signal's falling edges
0 1 : Counts external signal's rising edges
1 0 : Counts external signal's falling and
1 1 : Must not be set
0 : Input from TBi
1 : TBj overflow
16
16
IN
(j = i – 1; however, j = 2 when i = 0,
rising edges
pin
00XX0000
When reset
00XX0000
Specification
Function
2
IN
2
pin (Note 4)
j = 5 when i = 3)
(Note 2)
(Note 3)
R
W
14. Timer B
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