DF3048BVX25WV Renesas Electronics America, DF3048BVX25WV Datasheet - Page 566
![MCU 3/5V 128K PB-FREE 100-TQFP](/photos/28/61/286123/100-tqfp__100-vqfp_sml.jpg)
DF3048BVX25WV
Manufacturer Part Number
DF3048BVX25WV
Description
MCU 3/5V 128K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3048BVX25WV
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3048BVX25WV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 14 Smart Card Interface
Use the following procedure to secure the clock duty cycle after powering on.
1. The initial state is port input and high impedance. Use pull-up or pull-down resistors to fix the
2. Fix at the output specified by the CKE1 bit in SCR.
3. Set SMR and SCMR, and switch to smart card interface mode operation.
4. Set the CKE0 bit in SCR to 1 to start clock output.
14.4
When using the SCI as a smart card interface, note the following points.
Receive Data Sampling Timing in Smart Card Mode and Receive Margin
In smart card mode the SCI operates on a base clock with 372 times the bit rate frequency. In
receiving, the SCI synchronizes internally with the fall of the start bit, which it samples on the
base clock. Receive data is latched at the rising edge of the 186th base clock pulse. See figure
14.10.
Rev. 3.00 Sep 27, 2006 page 538 of 872
REJ09B0325-0300
Internal
base clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
potential.
Usage Notes
Figure 14.10 Receive Data Sampling Timing in Smart Card Mode
0
186 clocks
185
372 clocks
Start
bit
371
0
D0
185
371
0
D1
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