參數(shù)資料
型號(hào): 7549
廠(chǎng)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(yè)數(shù): 18/73頁(yè)
文件大小: 1272K
代理商: 7549
Rev.2.00
REJ03B0202-0200
Mar 05, 2007
Page 18 of 70
7549 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Fig 17. Block diagram of pins (2)
Compare output
port selection bit
Key input interrupt
Compare output
Port latch
(10) Port P1
3
Timer2 output
P1
3
/T
2OUT
output valid bit
Key input interrupt
A/D converter
input
Key-on wakeup input selection bit
Analog input pin selection bit
Key input interrupt
(11) Port P1
4
- P1
7
(Note)
(12) Port P2
0
, P2
1
Pull-up control at STP
P2
0
/X
OUT
/X
COUT
Oscillation mode selection bit
(function set ROM data 1)
P2
1
/X
IN
/X
CIN
Note: Set to “1” the port P2
0
direction register.
Clock input
(13) Port P3
0
, P3
1
(14) CNVss
Mode setting signal
input
QzROM programming
power supply
Reset signal input
(15) RESET
(9) Port P1
0
, P1
1
, P1
2
Data bus
Pull-up control bit
Direction
register
Pull-up control bit
Direction
register
Port latch
Data bus
Direction
register
Port latch
Data bus
Data bus
Pull-up control bit
Direction
register
Port latch
Direction
register
Port latch
Data bus
Key-on wakeup input selection bit
Analog input pin selection bit
Key-on wakeup input selection bit
Analog input pin selection bit
A/D converter
input
A/D converter
input
Direction
register
Port latch
Data bus
represents a parasitic diode.
No current flow is possible. Ensure that the input voltage
to each pin does not exceed the absolute maximum rating.
Note:
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