UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 336

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

17.4.2 3-wire serial I/O mode
a display controller, etc.
input line (SI3n).
(1) Registers to be used
334
The 3-wire serial I/O mode can be used when connecting a peripheral IC incorporating a clocked serial interface,
This mode executes data transfers via three lines: a serial clock line (SCK3n), serial output line (SO3n), and serial
Address: FFB0H (SIO30), FFB8H (SIO31) After reset: 00H
CSIM3n
• Serial operation mode register 3n (CSIM3n)
• Port mode registers 2, 3 (PM2, PM3)
• Ports 2, 3 (P2, P3)
(a) Serial operation mode register 3n (CSIM3n)
Notes 1. When CSIE3n = 0 (SIO3n operation stopped status), the SI3n, SO3n, and SCK3n pins can be used
Symbol
CSIM3n is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears CSIM3n to 00H.
2. When CSIE3n = 1 (SIO3n operation enabled status), the SI3n pin can be used as a port pin if only
3. When MODEn = 1 (receive-only mode), the SO3n pin can be used for port functions.
4. Expanded-specification products of PD780024A, 780034A Subseries only.
as port functions.
the transmit function is used, and the SO3n pin can be used as a port pin if only the receive-only mode
is used.
SCL3n1
CSIE3n
CSIE3n
MODEn
<7>
0
1
0
1
0
0
1
1
Operation stopped
Operation enabled
Transmit/transmit and receive mode
Receive-only mode
SCL3n0
CHAPTER 17 SERIAL INTERFACES SIO30 AND SIO31
Shift register operation
6
0
0
1
0
1
Operation mode
External clock input to SCK3n
f
f
f
X
X
X
/2
/2
/2
3
4
5
5
0
User’s Manual U14046EJ5V0UD
Enable/disable specification for SIO3n
Transfer operation modes and flags
Clear
Count operation enable
Write to SIO3n
Read from SIO3n
4
0
Transfer start trigger
Serial counter
R/W
Clock selection
3
0
1.04 MHz
523 kHz
261 kHz
MODEn
f
X
= 8.38 MHz
2
Port function
Serial function + port function
SO3n
Port function
SO3n pin function
SCL3n1
1
f
1.50 MHz
750 kHz
375 kHz
Port
Note 1
Note 3
X
= 12 MHz
SCL3n0
0
Note 4
Note 2