參數(shù)資料
型號： 7548
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁數(shù)： 25/73頁
文件大小： 1255K
代理商： 7548
Rev.2.00
REJ03B0210-0200
Mar 15, 2007
Page 25 of 70
7548 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Fig 23. Structure of timer mode register
Fig 24. Structure of timer count source set register
Fig 25. Block diagram of timer 1 and timer 2
b7
b0
Timer mode register
(TM: address 002B
16
, initial value: 00
16
)
Not used (return “0” when read)
Timer 2 count stop bit
0: Count start
1: Count stop
P1
3
/T2
OUT
output valid bit
0: Pulse output invalid (I/O port)
1: Pulse output valid
T2
OUT
polarity selection bit
0: Start from “H” level
1: Start from “L” level
Timer 2 write control bit
0: Write to latch and timer simultaneously
1: Write to only latch
Timer A write control bit
0: Write to latch and timer simultaneously
1: Write to only latch
Timer A count stop bit
0: Count start
1: Count stop
Not used (return “0” when read)
b7
b0
Timer count source set register
(TCSS: address 002C
16
, initial value: 00
16
)
Timerb1 b0
φ
φ
SOURCE/16
0 0 :
Timerb4 b3 b2
φ
φ
φ
φ
φ
φ
SOURCE/16
0 0 (32 kHz quartz crystal oscillation)
CIN
input clock
Prescaler 12 count source selection bit
SO input clock
CIN
0 :
Not used (return “0” when read)
Note 1:
φ
16
).
rSOURCE is the clock selected by bits 5 and 4 in the clock mode register (0037
Data bus
Timer 1
interrupt
request
φ
SOURCE/16
X
CIN
input clock
(32 kHz quartz
crystal oscillation)
Data bus
Prescaler 12 latch (8)
Timer 1 latch (8)
Prescaler 12 (8)
Timer 1 (8)
φ
SOURCE/256
φ
SOURCE/16
Timer 2 count
stop bit
Timer 2 count
source selection bit
Prescaler 12 count
source selection bit
Timer 2
interrupt
request
Timer 2 latch (8)
Timer 2 (8)
Timer A underflow
Timer 2 write
control bit
Toggle flip-flop
T
Q
Q
P1
3
/T2
OUT
output valid bit
R
T2
OUT
polarity
selection bit
“1”
“0”
P1
3
/T2
OUT
output valid bit
Port P1
3
latch
Port P1
3
direction
register
P1
3
/T2
OUT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
7548_07 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Standard Characteristics
7548_0710 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
75481-001 功能描述:集管和線殼 BACKPANEL PINS RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點類型:Pin (Male) 節(jié)距:1 mm 位置/觸點數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Brass 觸點電鍍:Gold 制造商:Hirose Connector
75481-002 功能描述:集管和線殼 BERGPIN - WITH LARGE STA-R RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點類型:Pin (Male) 節(jié)距:1 mm 位置/觸點數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Brass 觸點電鍍:Gold 制造商:Hirose Connector
75481-004 功能描述:集管和線殼 BERGPIN RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點類型:Pin (Male) 節(jié)距:1 mm 位置/觸點數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Brass 觸點電鍍:Gold 制造商:Hirose Connector
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