UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 360

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

15.3 Registers Controlling Serial Interfaces CSI10 and CSI11
(1) Serial operation mode register 1n (CSIM1n)
360
Address: FF80H After reset: 00H R/W
CSIM10
Serial interfaces CSI10 and CSI11 are controlled by the following four registers.
• Serial operation mode register 1n (CSIM1n)
• Serial clock selection register 1n (CSIC1n)
• Port mode register 1 (PM1) or port mode register 7 (PM7), port mode register 0 (PM0)
• Port register 1 (P1) or port register 7 (P7), port mode register 0(P0)
Notes 1.
Caution Be sure to clear bit 5 to 0.
Symbol
CSIM1n is used to select the operation mode and enable or disable operation.
CSIM1n can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Remark n = 0, 1
2.
3.
4.
5.
6.
TRMD10
DIR10
Bit 0 is a read-only bit.
To use P10/SCK10/T
(00H).
Bit 0 (CSOT10) of CSIM10 and serial I/O shift register 10 (SIO10) are reset.
Do not rewrite TRMD10 when CSOT10 = 1 (during serial communication).
The SO10 output (see (a) in Figure 15-1) is fixed to the low level when TRMD10 is 0. Reception is
started when data is read from SIO10.
Do not rewrite DIR10 when CSOT10 = 1 (during serial communication).
CSOT10
CSIE10
CSIE10
0
<7>
Note 5
0
1
1
0
1
0
1
Note 6
Note 4
Figure 15-3. Format of Serial Operation Mode Register 10 (CSIM10)
Disables operation
Enables operation
Receive mode (transmission disabled).
Transmit/receive mode
MSB
LSB
Communication is stopped.
Communication is in progress.
TRMD10
CHAPTER 15 SERIAL INTERFACES CSI10 AND CSI11
6
X
Note 1
D61 and P12/SO10 as general-purpose ports, set CSIM10 in the default status
Note 2
5
0
User’s Manual U17554EJ4V0UD
and asynchronously resets the internal circuit
Operation control in 3-wire serial I/O mode
DIR10
4
Transmit/receive mode control
Communication status flag
First bit specification
3
0
2
0
Note 3
.
1
0
CSOT10
0