HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 266
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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• TCNT counter timing
248 RENESAS
Internal clock
Internal clock source: Bits TPSC2–TPSC0 in the TCR select the system clock (CK) or one of
three internal clock sources ( /2, /4, /8) obtained by prescaling the system clock. Figure
10.17 shows the timing.
External clock source: The external clock input pin (TCLKA–TCLKD) source is selected by
bits TPSC2–TPSC0 in the TCR and its valid edges are selected with the CKEG1 and CKEG0
bits of the TCR. The rising edge, falling edge, or both edges can be selected. The pulse width
of the external clock signal must be at least 1.5 system clocks when a single edge is selected
and at least 2.5 system clocks when both edges are selected. Shorter pulses will not be counted
correctly. Figure 10.18 shows the timing when both edges are detected.
TCNT value
TCNT input
STR0–STR4
H'0000
clock
TCNT value
CK
IMF
GR
Figure 10.17 Count Timing for Internal Clock Sources
N – 1
Figure 10.16 Periodic Counter Operation
N
Counter cleared by
GR compare match
N + 1
Time
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