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参数资料
| 型号： | R8A66151SP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 24 I/O, PIA-GENERAL PURPOSE, PDSO32 |
| 封装： | SOP-32 |
| 文件页数： | 5/8页 |
| 文件大小： | 554K |
| 代理商： | R8A66151SP |
R8A66151SP
REJ03F0258-0100 Rev.1.00 Jan.08.2008
Page 3 of 7
DESCRIPTION OF OPERATION
(1) When power ON, the status of DO and D1~D24 terminals are not determined. These terminals are turn
to high-impedance when "L" is input to the /S terminal.
(2) By the negative edge of /CS, the status of D1~D24 terminals is loaded on shift register 1.
(3) Synchronous to the negative edge of CLK, 24-bit loaded data is serial output from the DO terminal.
(4) Synchronous to the positive edge of CLK, 24-bit serial input data from DI is write into the shift register 2.
(5) The 25th and following shift clock pulse are ignored and the serial data input operation is stopped.
And the DO terminal becomes high-impedance ("High-Z").
(6) By the positive edge of /CS, input data described in (4) is output to D1~D24 terminals.
(7) Shift register 1 loads the AND tie data of external parallel input data and latched data on parallel output
latch.
(8) If the /CS is changed from "L" to "H" before reaches the 24th bit of CLK, parallel output latch latches
data which has been written on shift register 2 and output it to D1~D24 terminals.
Serial data after this since is ignored and the DO terminal becomes high-impedance.
(9) Input/output mode set to D1~D24 terminals is done by the serial input data to the DI terminal.
Terminals which "H" is written are set to input, and "L" is written are set to output.
OPERATION TIMING CHART
S
CS
1
23
456
789
10
23
24
25
CLK
DI
DO
D1
DI1
DO1
D2
DI2
DO2
D24
DI24
DO24
1 Sequence
DO1
DO2
DO3
DO4
DO5
DO6
DO7
DO8
DO9
DO23 DO24
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
DI23
DI24
High-Z
(1)
(2)
(4)
(3)
(5)
(6)
High-Z
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| RA-4565SA:B-3 | REAL TIME CLOCK, PDSO14 |
| RA-4565SA | REAL TIME CLOCK, PDSO14 |
| RA-4574SAB-3 | REAL TIME CLOCK, PDSO14 |
| RA-4574SAB-3 | REAL TIME CLOCK, PDSO14 |
| RA-4574SAB | REAL TIME CLOCK, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| R8A66151SP#T1 | 制造商:Renesas 功能描述:0 |
| R8A66152SP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:12-BIT I/O EXPANDER WITH LED DRIVE FUNCTION |
| R8A66153FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:PROGRAMMABLE BUFFERED I/O EXPANDER |
| R8A66153FP#R1 | 制造商:Renesas Electronics Corporation 功能描述:PROGRAMMABLE BUFFERED I/O EXPANDER 制造商:Renesas 功能描述:0 |
| R8A66153FP#RF0Z | 制造商:Renesas Electronics Corporation 功能描述: |
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