DF2134AFA20V Renesas Electronics America, DF2134AFA20V Datasheet - Page 734

• Manufacturer Part Number: DF2134AFA20V
• Description: IC H8S/2100 MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2134AFA20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 58
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 80-QFP
• For Use With: 3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 23 Clock Pulse Generator
t
t
EXCLH
EXCLL
V
0.5
EXCL
CC
t
t
EXCLr
EXCLf
Figure 23.8 Subclock Input Timing
When Subclock Is Not Needed: Do not enable subclock input when the subclock is not needed.
In transiting to power-down mode, if at least two cycles of the
Note on Subclock Usage:
32-kHz clock are not input after the 32-kHz clock input is enabled (EXCLE = 1) until the
SLEEP instruction is executed (power-down mode transition), the subclock input circuit is
not initialized and an error may occur in the microcomputer.
Before power-down mode is entered with using the subclock, at least two cycle of the 32-kHz
clock should be input after the 32-kHz clock input is enabled (EXCLE = 1).
As described in the hardware manual (clock pulse generator/subclock input circuit), when the
subclock is not used, the subclock input should not be enabled (EXCLE = 0).
23.8
Subclock Waveform Shaping Circuit
To eliminate noise in the subclock input from the EXCL pin, this circuit samples the clock using a
clock obtained by dividing the clock. The sampling frequency is set with the NESEL bit in
LPWRCR. For details, see section 24.2.2, Low-Power Control Register (LPWRCR). The clock is
not sampled in subactive mode, subsleep mode, or watch mode.
Rev. 4.00 Jun 06, 2006 page 678 of 1004
REJ09B0301-0400