HD64F2239TF20I Renesas Electronics America, HD64F2239TF20I Datasheet - Page 682

• Manufacturer Part Number: HD64F2239TF20I
• Description: MCU 3V 384K I-TEMP 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of HD64F2239TF20I

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 15 Serial Communication Interface (SCI)
15.8
SCI_0 provides the SCI select function that enables one-to-one clocked synchronous
communication between a master LSI and multiple slave LSIs (these LSIs). Figure 15.36 shows an
example of communication using the SCI select function and figure 15.37 shows the summary of
its operation.
The master LSI enables to communicate with the slave LSI_A by setting the SEL_A signal to low
and the SEL_B signal to high. In this case, the TxD0_B pin of the slave LSI_B becomes Hi-Z and
that fixes the on-chip SCK0_B signal high, causing the communication terminated. To
communicate with the slave LSI_B, set the SEL_A signal to high and the SEL_B signal to low.*
The slave LSI detects its being selected by the low input interrupt of IRQ7 and handles data
transferring smoothly.
Note: * Change the select signal of the master LSI (SEL_A or SEL_B) while the serial clock
Rev. 6.00 Mar. 18, 2010 Page 620 of 982
REJ09B0054-0600
Master LSI
SCI Select Function (H8S/2239 Group Only)
(M_SCK) is high after the last bit of the transmit data has been output. In addition, set
only one select signal to low at a time.
Figure 15.36 Example of Communication Using SCI Select Function
M_SCK
M_RxD
M_TxD
SEL_A
SEL_B
SCK0
SCK0
RxD0
RxD0
IRQ7
TxD0
IRQ7
TxD0
Slave LSI_A (this LSI)
Slave LSI_B (this LSI)
C/A = CKE1 = SSE = 1
SCK0_A
RSR0_A
controller
Interrupt
Transfer
control
TSR0_A