UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 354

• 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

(4) Port mode register 3 (PM3)
352
Address: FF23FH After reset: FFH
Symbol
PM3
Notes 1. The digital filter can be used when in high-speed mode. The response time is slower when the digital
Caution
Remarks 1. f
PM3 is a register that sets the input/output of port 3 in 1-bit units.
To use the P32/SDA0 pin as serial data I/O and the P33/SCL0 pin as clock I/O, clear PM32, PM33, and the output
latches of P32 and P33 to 0.
PM3 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets PM3 to FFH.
DFC0
2. The transfer rate in standard mode must not be set when f
CL00
CHAPTER 18 SERIAL INTERFACE IIC0 ( PD780024AY, 780034AY SUBSERIES ONLY)
0
1
0
1
2. The transfer clock does not change in the high-speed mode even if DFC0 is turned on and off.
filter is used.
Stop serial transfer once before rewriting CL00 to other than the same value.
Figure 18-7. Format of IIC Transfer Clock Select Register 0 (IICCL0) (2/2)
PM3n
X
: Main system clock oscillation frequency
7
1
0
1
Digital filter off
Digital filter on
f
f
X
X
/44
/86
Output mode (output buffer on)
Input mode (output buffer off)
Figure 18-8. Format of Port Mode Register 3 (PM3)
PM36
6
Standard mode
R/W
PM35
5
User’s Manual U14046EJ5V0UD
190.4 kHz
97.5 kHz
I/O mode selection of P3n pin (n = 0 to 6)
f
X
Control of digital filter operation
= 8.38 MHz
PM34
Note 2
Selection of transfer rate
4
PM33
3
f
X
/24
X
is more than 100 kHz.
PM32
2
Note 1
High-speed mode
PM31
1
350 kHz
f
X
= 8.38 MHz
PM30
0