參數(shù)資料
型號: μPD78F9217Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 78/148頁
文件大?。?/td> 621K
代理商: ΜPD78F9217Y
Preliminary Product Information
78
μ
PD78F9217Y
(3) SMB0 control registers
The following five types of registers are used to control SMB0.
SMB control register 0 (SMBC0)
SMB status register 0 (SMBS0)
SMB clock selection register 0 (SMBCL0)
SMB mode register 0 (SMBM0)
SMB input level setting register 0 (SMBVI0)
The following additional registers are also used.
SMB shift register 0 (SMB0)
Slave address register 0 (SMBSVA0)
(a) SMB control register 0 (SMBC0)
This register sets SMB operation enable/disable, the wait timing, and other SMB operations.
SMBC0 is manipulated with a 1-bit or 8-bit memory manipulation instruction.
A RESET input clears SMBC0 to 00H.
Caution
Set port mode register 2 (PM2
×
) as follows in SMB mode.
Reset the output latch to 0.
Set P23 (SCL0) in output mode (PM23 = 0).
Set P24 (SDA0) in output mode (PM24 = 0).
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