UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 256

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

254
Notes 1. When CSIE3 = 0 (SIO3 operation stopped), the SI, SO, and SCK pins can be used for port functions.
Remark f
CSIM3
Symbol
2. When CSIE3 = 1 (SIO3 operation enabled), if only the transmit function is used, the SI pin can be used
3. Expanded-specification products only
for a port function, and in the receive-only mode, the SO pin can be used for a port function.
CSIE3
X
: System clock oscillation frequency
7
SCL31
CSIE3
MODE
0
1
0
1
0
0
1
1
0
6
Figure 13-2. Format of Serial Operation Mode Register 3
Operation disabled
Operation enabled
Transmit/transmit and receive mode
Receive-only mode
SCL30
Shift register operation
0
5
0
1
0
1
Operation mode
4
0
CHAPTER 13 SERIAL INTERFACE SIO3
External clock input to SCK pin
f
f
f
X
X
X
/2
/2
/2
0
6
7
8
3
User’s Manual U13029EJ7V1UD
MODE SCL31SCL30
2
Enable/disable specification for SIO3
Transfer operation modes and flags
Cleared
Count operation enabled
Write to SIO3
Read from SIO3
187 kHz
93.7 kHz
46.8 kHz
1
Transfer start trigger
At f
Serial counter
X
0
= 12 MHz
Clock selection
Address
FFB0H
Note 3
Port function
Serial function + port function
Normal output
Fixed at low level
After reset
131 kHz
65.5 kHz
32.7 kHz
00H
At f
SO output
X
Port
= 8.38 MHz
Note 1
R/W
R/W
Note 2