HD64F2239TF20I Renesas Electronics America, HD64F2239TF20I Datasheet - Page 692

• 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)
15.10.7 Switching from SCK Pin Function to Port Pin Function
• Problem in Operation
• Sample Procedure for Avoiding Low-Level Output
Rev. 6.00 Mar. 18, 2010 Page 630 of 982
REJ09B0054-0600
Figure 15.43 Operation when Switching from SCK Pin Function to Port Pin Function
When switching the SCK pin function to the output port function (high-level output) by
making the following settings while DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE
= 1 (synchronous mode), low-level output occurs for one half-cycle.
As this sample procedure temporarily places the SCK pin in the input state, the SCK/port pin
should be pulled up beforehand with an external circuit.
1. End of serial data transmission
2. TE bit = 0
3. C/A bit = 0… Switchover to port output
4. Occurrence of low-level output
With DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1, make the following
settings in the order shown.
1. End of serial data transmission
2. TE bit = 0
3. CKE1 bit = 1
4. C/A bit = 0… Switchover to port output
5. CKE1 bit = 0
SCK/port
Data
TE
C/A
CKE1
CKE0
Bit 6
Bit 7
1. End of transmission
2. TE = 0
3. C/A = 0
4. Low-level output
Half-cycle low-level output