HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 995
HD64F2638F20J
Manufacturer Part Number
HD64F2638F20J
Description
IC H8S MCU FLASH 256K 128-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2638F20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
Motor Control PWM, POR, PWM, WDT
Number Of I /o
72
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F2638F20J
Manufacturer:
PENESAS
Quantity:
252
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H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
23A.8 φ Clock Output Disabling Function
Output of the φ clock can be controlled by means of the PSTOP bit in SCKCR, and DDR for the
corresponding port. When the PSTOP bit is set to 1, the φ clock stops at the end of the bus cycle,
and φ output goes high. φ clock output is enabled when the PSTOP bit is cleared to 0. When DDR
for the corresponding port is cleared to 0, φ clock output is disabled and input port mode is set.
Table 23A-6 shows the state of the φ pin in each processing state.
Using the on-chip PLL circuit to lower the oscillator frequency or prohibiting external φ clock
output also have the effect of reducing unwanted electromagnetic interference*. Therefore,
consideration should be given to these options when deciding on system board settings.
Note: * Electromagnetic interference: EMI (Electro Magnetic Interference)
Table 23A-6 φ Pin State in Each Processing State
DDR
PSTOP
Hardware standby mode
Software standby
Sleep mode
High-speed mode, medium-speed
mode
REJ09B0103-0800 Rev. 8.00
May 28, 2010
0
—
High impedance
High impedance
High impedance
High impedance
HD6432638F, HD64F2630F, HD6432630F, HD64F2635F, HD6432635F, HD6432634F]
Section 23A Power-Down Modes
1
0
High impedance
Fixed high
φ output
φ output
[HD64F2636F, HD64F2638F, HD6432636F,
1
High impedance
Fixed high
Fixed high
1
Fixed high
Page 945 of 1458
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