DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 694

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Setting Oscillation Stabilization Time after Clearing Software Standby Mode:
Bits STS2 to STS0 in SBYCR should be set as described below.
• Using Crystal Resonator
• Using External Clock
Table 22.2 Oscillation Stabilization Time Settings
Note:
Rev.2.00 May. 28, 2009 Page 654 of 732
REJ09B0059-0200
STS2
0
1
Set bits STS2 to STS0 so that the standby time is more than the oscillation stabilization time.
Table 22.2 shows the standby times for operating frequencies and settings of bits STS2 to
STS0.
The desired value can be set.
: Recommended setting value
* Setting prohibited.
STS1
0
1
0
1
STS0
0
1
0
1
0
1
0
1
8192 states
16384 states
32768 states
65536 states
131072 states
262144 states
Reserved
16 states*
Standby Time
0.4
0.6
1.6
3.3
6.6
13.1
⎯
0.8
20 MHz
10 MHz
0.8
1.6
3.3
6.6
13.1
26.2
⎯
1.6
8 MHz
1.0
2.0
4.1
8.2
16.4
32.8
⎯
2.0
1.3
2.7
5.5
10.9
21.8
43.7
⎯
2.7
6 MHz
Unit
ms
⎯
μs