em78f644nso28s ELAN Microelectronics Corp, em78f644nso28s Datasheet - Page 40

• Manufacturer Part Number: em78f644nso28s
• Description: Flash Series 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

EM78F648/644/642/641/548/544/542/541N
8-Bit Microcontroller
30 •
Bit 6~Bit 5 (TD1 ~ TD0): SDO status output delay time options
Bit 4:
Bit 3 (OD3): Open-Drain control bit
Bit 2 (OD4): Open-Drain control bit
Bit 1:
Bit 0 (RBF): Read Buffer Full flag
6.1.25 Bank 1 RC SPIC (SPI Control Register)
Bit 7 (CES): Clock Edge Select bit
Bit 6 (SPIE): SPI Enable bit
Bit 7
CES
TD1
Not used, set to “0” all the time.
Not used, set to “0” all the time
0: Open-drain disable for SDO
1: Open-drain enable for SDO
0: Open-drain disable for SCK
1: Open-drain enable for SCK
0: Receiving is not completed. SPIRB has not fully exchanged data.
1: Receiving completed; SPIRB has fully exchanged data.
0: Data shifts out on a rising edge, and shifts in on a falling edge. Data
1: Data shifts out on a falling edge, and shifts in on a rising edge. Data
0: Disable SPI mode
1: Enable SPI mode
0
0
1
1
SPIE
Bit 6
is on hold during low-level.
is on hold during high-level.
For F642/542N, F641/541N, this register is reserved.
Bit 5
SRO
Bit 4
SSE
(This specification is subject to change without further notice)
NOTE
TD0
0
1
0
1
SDOC
Bit 3
Product Specification (V1.0) 05.05.2010
SBRS2
Bit 2
Delay Time
SBRS1
Bit 1
16 CLK
24 CLK
32 CLK
8 CLK
SBRS0
Bit 0