HD6417020SX20IV Renesas Electronics America, HD6417020SX20IV Datasheet - Page 129

• 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: -

•
•
Bit 7: CMF
0
1
•
Bit 6: CMIE
0
1
•
Bits 15–8 (reserved): These bits always read as 0.
Bit 7 (compare match flag (CMF)): CMF is a flag that indicates whether the values of RTCNT
and the refresh time constant register (RTCOR) match. When 0, the value of RTCNT and
RTCOR do not match; when 1, the value of RTCNT and RTCOR match.
Bit 6 (compare match interrupt enable (CMIE)): CMIE enables or disables the compare match
interrupt (CMI) generated when CMF is set to 1 in RTCSR (RTCNT value = RTCOR value).
When cleared to 0, CMI interrupt is disabled; when set to 1, it is enabled.
Bits 5–3 (clock select bits 2–0 (CKS2–CKS0)): CKS2–CKS0 select the clock input to RTCNT
from among the seven types of clocks created by dividing the system clock ( ). When the input
clock is selected with the CKS2–CKS0 bits, RTCNT starts to increment.
Initial value:
Initial value:
Bit name:
Bit name:
R/W:
R/W:
Bit:
Bit:
Description
RTCNT does not equal the value of RTCOR (initial value)
To clear CMF, the CPU must read CMF after it has been set to 1, then write a
0 in this bit
Value RTCNT is equal to the value of RTCOR
CMF
R/W
15
—
—
0
7
0
Description
Compare match interrupt request (CMI) is disabled (initial value)
Compare match interrupt request (CMI) is enabled
CMIE
R/W
14
—
—
0
6
0
CKS2
R/W
13
—
—
0
5
0
CKS1
R/W
12
—
—
0
4
0
CKS0
R/W
11
—
—
0
3
0
10
—
—
—
—
0
2
0
—
—
—
—
RENESAS 109
9
0
1
0
—
—
—
—
8
0
0
0