UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 329
UPD78F0034BGC-8BS-A
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
Datasheet
1.UPD78F0034BGK-9ET-A.pdf
(605 pages)
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
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17.1 Functions of Serial Interfaces SIO30 and SIO31
(1) Operation stop mode
(2) 3-wire serial I/O mode (fixed as MSB first)
PD780024AY, 780034AY Subseries products have one 3-wire serial I/O mode channel (SIO30).
The PD780024A, 780034A Subseries products have two 3-wire serial I/O mode channels (SIO30, SIO31). The
Serial interface SIO3n has the following two modes.
Note SI30, SO30, and SCK30 pins are alternate with P20, P21, and P22 pins. SI31, SO31, and SCK31 pins are
SCK3n
This mode is used when serial transfers are not performed. For details, see 17.4.1 Operation stop mode.
This is an 8-bit data transfer mode using three lines: a serial clock line (SCK3n), serial output line (SO3n), and
serial input line (SI3n).
Since simultaneous transmit and receive operations are enabled in 3-wire serial I/O mode, the processing time
for data transfers is reduced.
The first bit of the serial transferred 8-bit data is fixed as the MSB.
3-wire serial I/O mode is useful for connection to a peripheral IC incorporating a clocked serial interface, a display
controller, etc. For details, see 17.4.2 3-wire serial I/O mode.
Figure 17-1 shows a block diagram of serial interface SIO3n.
Remark n = 0, 1:
SO3n
SI3n
alternate with P34, P35, and P36 pins.
Note
Note
Note
n = 0:
CHAPTER 17 SERIAL INTERFACES SIO30 AND SIO31
PD780024A, 780034A Subseries
PD780024AY, 780034AY Subseries
Figure 17-1. Block Diagram of Serial Interface SIO3n
User’s Manual U14046EJ5V0UD
Internal bus
Serial clock
counter
Serial clock
controller
Serial I/O shift register
3n (SIO3n)
8
Interrupt
request signal
generator
Output latch
Selector
INTCSI3n
f
f
f
X
X
X
/2
/2
/2
3
4
5
327
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