參數(shù)資料
型號(hào)： HD404341R
廠商： Hitachi,Ltd.
英文描述： 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
中文描述： 4位HMCS400系列微電腦（4位單片微計(jì)算機(jī)）
文件頁(yè)數(shù)： 80/100頁(yè)
文件大?。?/td> 610K
代理商： HD404341R
HD404344R Series/HD404394 Series
80
Programmable ROM Operation
The HD4074344 and HD4074394 on-chip PROMs are programmed in PROM mode.
In PROM mode, the MCU does not operate. It can be programmed like a standard 27256 EPROM using a
standard PROM programmer and a socket adapter as shown in figure 61. Table 23 lists the recommended
PROM programmers and socket adapters.
Since instructions of the HMCS400 series consists of 10 bits, the HMCS400 series microcomputers
incorporate a conversion circuit to enable the use of a general-purpose PROM programmer. By this circuit,
an instruction is read or written to using two addresses, lower five bits and upper five bits. For example, if
4 kwords of on-chip PROM are programmed by a general-purpose PROM programmer, 8 kbytes of
addresses ($0000–$1FFF) should be specified.
Control signals
Address bus
Data bus
A
14
, A
13
2
A
12
–A
0
O
4
–O
0
28-to-28-pin socket adapter
30-to-28 pin socket adapter
PROM programmer
V
V
PP
GND
A
14
–A
0
O
7
–O
0
O
7
–O
5
CE
,
OE
A
12
–A
0
O
4
–O
0
HD4074344
HD4074394
V
CC
GND
V
PP
X
ON
M
0
RESET
3
Figure 61 PROM Mode Connections
相關(guān)PDF資料
PDF描述
HD404394S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404612 4-Bit Single-Chip Microcomputer
HD404612FS 4-Bit Single-Chip Microcomputer
HD404612H 4-Bit Single-Chip Microcomputer
HD404612TF 4-Bit Single-Chip Microcomputer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404341RFP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404341RFT 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD404341RS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD404341S 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404342FP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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