HD64F2134FA20 Renesas Electronics America, HD64F2134FA20 Datasheet - Page 431
HD64F2134FA20
Manufacturer Part Number
HD64F2134FA20
Description
IC H8S MCU FLASH 128K 80QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of HD64F2134FA20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
IrDA, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
58
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
80-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Quantity:
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14.2
14.2.1
TCNT is an 8-bit readable/writable * up-counter.
When the TME bit is set to 1 in TCSR, TCNT starts counting pulses generated from the internal
clock source selected by bits CKS2 to CKS0 in TCSR. When the TCNT value overflows (changes
from H'FF to H'00), the OVF flag in TCSR is set to 1, and an internal reset, NMI interrupt,
interval timer interrupt (WOVI), etc., can be generated, according to the mode selected by the
WT/IT bit and RST/NMI bit.
TCNT is initialized to H'00 by a reset, in hardware standby mode, or when the TME bit is cleared
to 0. It is not initialized in software standby mode.
Note: * TCNT is write-protected by a password to prevent accidental overwriting. For details
Bit
Initial value
Read/Write
Register Descriptions
Timer Counter (TCNT)
see section 14.2.4, Notes on Register Access.
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
Rev. 4.00 Jun 06, 2006 page 375 of 1004
R/W
3
0
Section 14 Watchdog Timer (WDT)
R/W
2
0
R/W
REJ09B0301-0400
1
0
R/W
0
0
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