- 您现在的位置：买卖IC网 > PDF目录33810 > 48e30 (Holtek Semiconductor Inc.) 8-Bit I/O Type MCU (With EEPROM) PDF资料下载
参数资料
| 型号： | 48e30 |
| 厂商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit I/O Type MCU (With EEPROM) |
| 中文描述： | 8位I / O型微控制器（带EEPROM） |
| 文件页数： | 10/44页 |
| 文件大小： | 351K |
| 代理商： | 48E30 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页
HT48E30
Rev. 0.00
18
January 12, 2004
Preliminary
The EEPROM data memory is accessed via a
three-wire serial communication interface by writing to
EECR. It is arranged into 128 words by 8 bits. The
EEPROM data memory contains seven instructions:
READ, ERASE, WRITE, EWEN, EWDS, ERAL and
WRAL. These instructions are all made up of 10 bits
data: 1 start bit, 2 op-code bits and 7 address bits.
By writing CS, SK and DI, these instructions can be
given to the EEPROM. These serial instruction data pre-
sented at the DI will be written into the EEPROM data
memory at the rising edge of SK. During the READ cy-
cle, DO acts as the data output and during the WRITE or
ERASE cycle, DO indicates the BUSY/READY status.
When the DO is active for read data or as a BUSY/
READY indicator the CS pin must be high; otherwise
DO will be in a high state. For successful instructions,
CS must be low once after the instruction is sent. After
power on, the device is by default in the EWDS state.
And, an EWEN instruction must be performed before
any ERASE or WRITE instruction can be executed.
C S
S K
D O
D I
t C D S
t C S S
t C S H
t S K L
t S K H
t D I S
t D I H
t P D 1
t P D 0
V a l i d D a t a
1
The following are the functional descriptions and timing diagrams of all seven instructions.
EECR A.C. Characteristics
Ta=25
°C
Symbol
Parameter
VCC=5V
±10%
VCC=2.2V
±10%
Unit
Min.
Max.
Min.
Max.
fSK
Clock Frequency
0201
MHz
tSKH
SK High Time
250
500
ns
tSKL
SK Low Time
250
500
ns
tCSS
CS Setup Time
50
100
ns
tCSH
CS Hold Time
0
0
ns
tCDS
CS Deselect Time
250
250
ns
tDIS
DI Setup Time
100
200
ns
tDIH
DI Hold Time
100
200
ns
tPD1
DO Delay to
1
250
500
ns
tPD0
DO Delay to
0
250
500
ns
tSV
Status Valid Time
250
250
ns
tHZ
DO Disable Time
100
200
ns
tPR
Write Cycle Time Per Word
2
5ms
相关PDF资料 |
PDF描述 |
|---|---|
| 48L120D | STANDARD RECOVERY DIODES |
| 48L160D | STANDARD RECOVERY DIODES |
| 48LF120D | CAP 1500PF 50V CERAMIC MONO 5% |
| 48LF160D | STANDARD RECOVERY DIODES |
| 48LFR120D | STANDARD RECOVERY DIODES |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 48-EM | 制造商:ITW Switches 功能描述:ELECTROMECHANICAL SWITCH KIT, Kit Contents:Miniature Sealed Electro-Mechanical P |
| 48ES | 制造商:VISUAL COMMUNICATIONS COMPANY LLC 功能描述:48ES /Custom Part |
| 48ESB | 功能描述:灯 Telephone Slide Base .04A .358M ANSI#5 RoHS:否 制造商:Chicago Miniature 灯类型:Incandescent 灯座类型:Wire Terminal 灯大小:T-1 3/4 颜色: 电压:14 V 工作电流: MSCP:0.3 MSCP 寿命:40000 hr 封装:Bulk |
| 48ESB- | 功能描述:LAMP T-2 TELEPHONE SLIDE 48V RoHS:是 类别:光电元件 >> 灯 - 白炽灯，氖灯 系列:- 标准包装:100 系列:- 颜色:透明 透镜样式/尺寸:圆形，带圆顶，5mm，T-1 3/4 引线型:小型凹槽 MSCP（平均球面烛光）:0.3 额定电压:60V 其它名称:913.4005913.4005-ND |
| 48ESB | 制造商:PRIVATE LABEL 功能描述:Incandescent Filament Lamp, Voltage Rating:48V, Bulb Size:T-2, Lamp Ba Type:Slide |
发布紧急采购，3分钟左右您将得到回复。