UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 215
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UPD78F9234MC-5A4-A
Manufacturer Part Number
UPD78F9234MC-5A4-A
Description
MCU 8BIT 8KB FLASH 30PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9232MC-5A4-A.pdf
(419 pages)
Specifications of UPD78F9234MC-5A4-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
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Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F9234MC-5A4-A
Manufacturer:
MAXIM
Quantity:
1 001
Part Number:
UPD78F9234MC-5A4-A
Manufacturer:
NEC
Quantity:
20 000
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11.4.3 Dedicated baud rate generator
generates a serial clock for transmission/reception of UART6.
(1) Configuration of baud rate generator
The dedicated baud rate generator consists of a source clock selector and an 8-bit programmable counter, and
Separate 8-bit counters are provided for transmission and reception.
Base clock
The clock selected by bits 3 to 0 (TPS63 to TPS60) of clock selection register 6 (CKSR6) is supplied to
each module when bit 7 (POWER6) of asynchronous serial interface operation mode register 6 (ASIM6) is
1. This clock is called the base clock and its frequency is called f
when POWER6 = 0.
Transmission counter
This counter stops operation, cleared to 0, when bit 7 (POWER6) or bit 6 (TXE6) of asynchronous serial
interface operation mode register 6 (ASIM6) is 0.
It starts counting when POWER6 = 1 and TXE6 = 1.
The counter is cleared to 0 when the first data transmitted is written to transmit buffer register 6 (TXB6).
If data are continuously transmitted, the counter is cleared to 0 again when one frame of data has been
completely transmitted. If there is no data to be transmitted next, the counter is not cleared to 0 and continues
counting until POWER6 or TXE6 is cleared to 0.
Reception counter
This counter stops operation, cleared to 0, when bit 7 (POWER6) or bit 5 (RXE6) of asynchronous serial
interface operation mode register 6 (ASIM6) is 0.
It starts counting when the start bit has been detected.
The counter stops operation after one frame has been received, until the next start bit is detected.
CHAPTER 11 SERIAL INTERFACE UART6
User’s Manual U17446EJ5V0UD
XCLK6
. The base clock is fixed to low level
213
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