DF2556FC20DV Renesas Electronics America, DF2556FC20DV Datasheet - Page 558

• Manufacturer Part Number: DF2556FC20DV
• Description: IC H8S/2556 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2556FC20DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 I
14.6
In master mode, this module has a possibility that high level period may be short in the two states
described below.
• When SCL is driven to low by the slave device
• When the rising speed of SCL is lowered by the load of the SCL line (load capacitance or pull-
Therefore, it monitors SCL and communicates by bit with synchronization.
Figure 14.21 shows the timing of the bit synchronous circuit and table 14.4 shows the time when
SCL output changes from low to Hi-Z then SCL is monitored.
Table 14.4 Time for Monitoring SCL
Rev. 6.00 Sep. 24, 2009 Page 510 of 928
REJ09B0099-0600
CKS3
0
1
up resistance)
2
C Bus Interface 2 (IIC2)
Bit Synchronous Circuit
SCL monitor
timing reference
clock
Internal SCL
Figure 14.21 The Timing of the Bit Synchronous Circuit
SCL
0
1
0
1
CKS2
Time for Monitoring SCL
7.5 tcyc
19.5 tcyc
14.5 tcyc
41.5 tcyc
VIH