UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 367

• 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

SDA0
is set to 1, a communication reservation can be made by setting bit 1 (STT0) of IIC control register 0 (IICC0) to 1
before a stop condition is detected.
SCL0
Remark IIC0:
Communication reservations are accepted via the following timing. After bit 1 (STD0) of IIC status register 0 (IICS0)
Figure 18-20 shows the communication reservation protocol.
Hardware processing
1
Program processing
STT0: Bit 1 of IIC control register 0 (IICC0)
STD0: Bit 1 of IIC status register 0 (IICS0)
SPD0: Bit 0 of IIC status register 0 (IICS0)
SDA0
SPD0
CHAPTER 18 SERIAL INTERFACE IIC0 ( PD780024AY, 780034AY SUBSERIES ONLY)
STD0
SCL0
2
3
IIC shift register 0
Figure 18-19. Timing for Accepting Communication Reservations
4
Communication
reservation
STT0 = 1
Figure 18-18. Communication Reservation Timing
5
6
User’s Manual U14046EJ5V0UD
7
Standby mode
8
Output by master with bus mastership
9
Set SPD0
and INTIIC0
Write to
IIC0
Set
STD0
1
2
3
4
5
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6