HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 160
HD6473258P10
Manufacturer Part Number
HD6473258P10
Description
IC H8 MCU OTP 32K 64DIP
Manufacturer
Renesas Electronics America
Series
H8® H8/325r
Datasheet
1.HD6413238F10.pdf
(301 pages)
Specifications of HD6473258P10
Core Processor
H8/300
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI, UART/USART
Number Of I /o
53
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
External
Operating Temperature
-20°C ~ 75°C
Package / Case
64-DIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Peripherals
-
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8.1.4 Register Configuration
Table 8-2 lists the registers of the 8-bit timer module. Each channel has an independent set of
registers.
Table 8-2. 8-Bit Timer Registers
Name
Timer control register
Timer control/status register
Timer constant register A
Timer constant register B
Timer counter
* Software can write a 0 to clear bits 7 to 5, but cannot write a 1 in these bits.
8.2 Register Descriptions
8.2.1 Timer Counter (TCNT) – H’FFC8 (TMR0), H’FFD0 (TMR1)
Bit
Initial value
Read/Write
Each timer counter (TCNT) is an 8-bit up-counter that increments on a pulse generated from one of
four clock sources. The clock source is selected by clock select bits 2 to 0 (CKS2 to CKS0) of the
timer control register (TCR). The CPU can always read or write the timer counter.
The timer counter can be cleared by an external reset input or by an internal compare-match signal
generated at a compare-match event. Counter clear bits 1 and 0 (CCLR1 and CCLR0) of the timer
control register select the method of clearing.
When a timer counter overflows from H’FF to H’00, the overflow flag (OVF) in the timer
control/status register (TCSR) is set to 1.
The timer counters are initialized to H’00 at a reset and in the standby modes.
R/W
7
0
R/W
6
0
Abbreviation
TCR
TCSR
TCORA
TCORB
TCNT
R/W
5
0
153
R/W
R/W
R/W
R/W
4
0
R/(W)*
R/W
R/W
R/W
3
0
Initial value TMR0
H’00
H’10
H’FF
H’FF
H’00
R/W
2
0
Address
H’FFC8
H’FFC9
H’FFCA H’FFD2
H’FFCB H’FFD3
H’FFCC H’FFD4
R/W
1
0
TMR1
H’FFD0
H’FFD1
R/W
0
0
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