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BU34675 数据表(PDF) 7 Page - Rohm

部件名 BU34675
功能描述  Single-chip 4-bit microcontroller for
Download  7 Pages
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制造商  ROHM [Rohm]
网页  http://www.rohm.com
标志 ROHM - Rohm

BU34675 数据表(HTML) 7 Page - Rohm

  BU34675 Datasheet HTML 1Page - Rohm BU34675 Datasheet HTML 2Page - Rohm BU34675 Datasheet HTML 3Page - Rohm BU34675 Datasheet HTML 4Page - Rohm BU34675 Datasheet HTML 5Page - Rohm BU34675 Datasheet HTML 6Page - Rohm BU34675 Datasheet HTML 7Page - Rohm  
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FExternal dimensions (Units: mm)
575
Optical disc ICs
BU34675
FExplanation of the hardware
(1)
Operates of a single power supply (VDD = 2.3 to
5.5V).
(2)
Memory size
ROM:
6144
8 bits
RAM:
256
4 bits
LCD display RAM :
7
4 bits
(3)
Instruction time (one cycle instruction)
1.5
µsec (at 4 MHz)
(4)
Sub-routine nesting:
8 levels
. . . . . . . . . . . . . . . . .
(5)
Interrupts: 5
External
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal (timer counter, serial I / O)
2
. . . . . . . . .
(6)
ROM data table function (6k data table region)
(7)
Two power save modes STOP / HALT
(8)
On-chip 7-segment LCD driver that can drive a wide
variety of display types
Bias
1 / 3
. . . . . . . . . . . . . .
Duty variation
1 / 3, 1 / 4 (programmable)
. . . . . .
Internal bias resistors (approximately 50k
3
stages)
(9)
LCD segment output can be switched to CMOS out-
put by software.
The COM3 pin and upper three segments are one-bit
units, and the lower four segments are all selected to-
gether. At reset, switches to CMOS low-current output
port with low level polarity.
(10) Remote control receiver circuit (pulse width mea-
surement)
(11) On-chip 8-bit timer counter
(12) On-chip I / O system makes interfacing with exter-
nal LSI easy (LSB first).
(13) 8 I / O lines that can be pulled up by software
(14) 4 input lines that can be pulled up by software


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