HD6417020SX20IV Renesas Electronics America, HD6417020SX20IV Datasheet - Page 294

• Manufacturer Part Number: HD6417020SX20IV
• Description: SH 1 CORE 32B MPU, 20MHZ/5V, 100
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6417020SX20IV

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Buffer Mode Operation: Figure 10.48 shows an example of an operation in the buffer mode with
GRA set as an output compare register and GRA and buffer register A (BRA) set for buffer
operation. The TCNT operates as a periodic counter that is cleared by GRB compare match.
TIOCA and TIOCB are set to toggle at compare matches A and B. Since buffer mode is selected,
when TIOCA toggles at a compare match A, the BRA value is simultaneously transferred to the
GRA. This operation is repeated at every compare match A. The transfer timing is shown in figure
10.49.
276 RENESAS
H' 0250
H' 0200
H' 0100
H' 0000
TIOCB
TIOCA
TCNT value
GRB
GRA
Figure 10.48 Buffer Mode Operation Example 1 (Output Compare Register)
BRA
H' 0250
H' 0200
H' 0200
H' 0100
Counter cleared by compare match B
Compare match A
H' 0100
H' 0200
H' 0200
Time
Toggle
output
Toggle
output