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參數(shù)資料
| 型號： | HD4074054H |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| 中文描述： | 4位單片機(jī)（4位單片微計(jì)算機(jī)） |
| 文件頁數(shù)： | 67/101頁 |
| 文件大?。?/td> | 610K |
| 代理商： | HD4074054H |
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HD404054 Series/HD404094 Series
67
In transfer state, writing data to serial mode register 1A (SM1A: $005) (06, 16) initializes serial
interface 1, and STS wait state is entered.
If the state changes from transfer to another state, the serial 1 interrupt request flag (IFS1: $003, bit 2) is
set by the octal counter that is reset to 000.
Continuous clock output state (only in internal clock mode): Continuous clock output state is entered
only in internal clock mode. In this state, the serial interface does not transmit/receive data but only
outputs the transmit clock from the
SCK
1
pin.
When bits 0 and 1 (PMRA0, PMRA1) of port mode register A (PMRA: $004) are 00 in transmit clock
wait state and if the transmit clock is input (17), the serial interface enters continuous clock output state.
If serial mode register 1A (SM1A: $005) is written to in continuous clock output mode (18), STS wait
state is entered.
STS wait state
(Octal counter = 000,
transmit clock disabled)
Transmit clock wait state
(Octal counter = 000)
MCU reset
00
SM1A write
04
STS instruction
01
Transmit clock
02
8 transmit clocks
03
STS instruction (IFS1 1)
05
SM1A write (IFS1 1)
06
External clock mode
STS wait state
(Octal counter = 000,
transmit clock disabled)
Transmit clock wait state
(Octal counter = 000)
Transfer state
(Octal counter 000)
SM1A write
14
STS instruction
11
Transmit clock
12
15
STS instruction (IFS1 1)
8 transmit clocks
13
Internal clock mode
Continuous transmit
clock output state
(PMRA 0, 1 = 0, 0)
SM1A write
18
Transmit clock 17
16
Note: Refer to the Operating States section for the corresponding encircled numbers.
MCU reset
10
SM1A write (IFS1 1)
Transfer state
(Octal counter 000)
Figure 50 Serial Interface State Transitions
Output Level Control in Idle States:
When serial interface 1 is in STS instruction wait state, the output
of serial output pin, SO
1
can be controlled by setting bit 1 (SM1B1) of serial mode register 1B (SM1B:
$028) to 0 or 1. The output level control example of serial interface 1 is shown in Figure 51. Note that the
output level cannot be controlled in transfer state.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD40A4054 | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| HD40A4358 | 4-bit HMCS400-Series microcomputer |
| HD404354 | 4-bit HMCS400-Series microcomputer |
| HD404354H | 4-bit HMCS400-Series microcomputer |
| HD404354S | 4-bit HMCS400-Series microcomputer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD4074054S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074094H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074094S | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity |
| HD4074224FP01 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074224FP02 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:CMOS 4-bit Single-Chip Microcomputers with the same architecture as the HMCS400 Series |
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