HD64F3644WV Renesas Electronics America, HD64F3644WV Datasheet - Page 107
![IC H8/3644 MCU FLASH 80TQFP](/photos/12/40/124086/hd64f3644wv_sml.jpg)
HD64F3644WV
Manufacturer Part Number
HD64F3644WV
Description
IC H8/3644 MCU FLASH 80TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD64F3644HV.pdf
(551 pages)
Specifications of HD64F3644WV
Core Processor
H8/300L
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
PWM, WDT
Number Of I /o
53
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
80-TQFP, 80-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F3644WV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 107 of 551
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Figure 4.8 shows the equivalent circuit of the 32.768-kHz crystal resonator.
Pin Connection when Not Using Subclock: When the subclock is not used, connect pin X
V
4.4
The H8/3644 Group is equipped with two on-chip prescalers having different input clocks
(prescaler S and prescaler W). Prescaler S is a 13-bit counter using the system clock ( ) as its
input clock. Its prescaled outputs provide internal clock signals for on-chip peripheral modules.
Prescaler W is a 5-bit counter using a 32.768-kHz signal divided by 4 (
prescaled outputs are used by timer A as a time base for timekeeping.
Prescaler S (PSS): Prescaler S is a 13-bit counter using the system clock ( ) as its input clock. It
is incremented once per clock period.
Prescaler S is initialized to H'0000 by a reset, and starts counting on exit from the reset state.
CC
and leave pin X
X
1
Prescalers
Figure 4.8 Equivalent Circuit of 32.768-kHz Crystal Resonator
2
Figure 4.9 Pin Connection when not Using Subclock
open, as shown in figure 4.9.
L
S
C
S
X
X
1
2
C
0
C = 1.5 pF (typ.)
R = 14 k
f
Crystal resonator:
W
0
S
= 32.768 kHz
R
Rev. 6.00 Sep 12, 2006 page 85 of 526
S
V
Open
CC
Section 4 Clock Pulse Generators
(typ.)
MX38T
(Nihon Denpa Kogyo)
W
/4) as its input clock. Its
X
2
REJ09B0326-0600
1
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