HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 129
HD6477021X20V
Manufacturer Part Number
HD6477021X20V
Description
MCU 5V 32K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
Specifications of HD6477021X20V
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 Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6477021X20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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•
•
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
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