HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 780
HD64F2676VFC33
Manufacturer Part Number
HD64F2676VFC33
Description
IC H8S MCU FLASH 256K 144-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2676VFC33
Core Processor
H8S/2600
Core Size
16-Bit
Speed
33MHz
Connectivity
IrDA, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
103
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 15 Serial Communication Interface (SCI, IrDA)
When turning on the power or switching between Smart Card interface mode and software standby
mode, the following procedures should be followed in order to maintain the clock duty cycle.
Powering On: To secure the clock duty cycle from power-on, the following switching procedure
should be followed.
When changing from smart card interface mode to software standby mode:
Rev. 3.00 Mar 17, 2006 page 728 of 926
REJ09B0283-0300
1. The initial state is port input and high impedance. Use a pull-up resistor or pull-down
2. Fix the SCK pin to the specified output level with the CKE1 bit in SCR.
3. Set SMR and SCMR, and switch to smart card mode operation.
4. Set the CKE0 bit in SCR to 1 to start clock output.
1. Set the data register (DR) and data direction register (DDR) corresponding to the SCK pin
2. Write 0 to the TE bit and RE bit in the serial control register (SCR) to halt transmit/receive
3. Write 0 to the CKE0 bit in SCR to halt the clock.
4. Wait for one serial clock period.
5. Make the transition to the software standby state.
CKE0
SCK
resistor to fix the potential.
to the value for the fixed output state in software standby mode.
operation. At the same time, set the CKE1 bit to the value for the fixed output state in
software standby mode.
During this interval, clock output is fixed at the specified level, with the duty cycle
preserved.
Figure 15.31 Timing for Fixing Clock Output Level
Specified pulse width
Specified pulse width
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