DF2338VFC25V Renesas Electronics America, DF2338VFC25V Datasheet - Page 842
![IC H8S/2300 MCU FLASH 144QFP](/photos/12/22/122201/df2338vfc25v_sml.jpg)
DF2338VFC25V
Manufacturer Part Number
DF2338VFC25V
Description
IC H8S/2300 MCU FLASH 144QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.DF2338VFC25V.pdf
(1246 pages)
Specifications of DF2338VFC25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
106
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 4x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2338VFC25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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- Download datasheet (7Mb)
Automatic SCI Bit Rate Adjustment: When boot mode is initiated, the H8S/2338 F-ZTAT chip
measures the low period of the asynchronous SCI communication data (H'00) transmitted
continuously from the host. The SCI transmit/receive format should be set as follows: 8-bit data, 1
stop bit, no parity. The chip calculates the bit rate of the transmission from the host from the
measured low period, and transmits one H'00 byte to the host to indicate the end of bit rate
adjustment. The host should confirm that this adjustment end indication (H'00) has been received
normally, and transmit one H'55 byte to the chip. If reception cannot be performed normally,
initiate boot mode again (reset), and repeat the above operations. Depending on the host’s
transmission bit rate and the chip’s system clock frequency, there will be a discrepancy between
the bit rates of the host and the chip. To ensure correct SCI operation, the host’s transfer bit rate
should be set to 9,600 or 19,200 bps.
Table 19.31 shows typical host transfer bit rates and system clock frequencies for which automatic
adjustment of the MCU’s bit rate is possible. The boot program should be executed within this
system clock range.
Table 19.31 System Clock Frequencies for which Automatic Adjustment
Host Bit Rate
19,200 bps
9,600 bps
Rev.4.00 Sep. 07, 2007 Page 810 of 1210
REJ09B0245-0400
of H8S/2338 F-ZTAT Bit Rate is Possible
Start
bit
Figure 19.38 Automatic SCI Bit Rate Adjustment
D0
System Clock Frequencies for which Automatic Adjustment
of H8S/2338 F-ZTAT Bit Rate is Possible
16 MHz to 25 MHz
8 MHz to 25 MHz
Low period (9 bits) measured (H'00 data)
D1
D2
D3
D4
D5
D6
D7
(1 or more bits)
High period
Stop
bit
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