HD6473837H Renesas Electronics America, HD6473837H Datasheet - Page 198

• Manufacturer Part Number: HD6473837H
• Description: IC H8 MCU OTP 60K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD6473837H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: SCI
• Peripherals: LCD, PWM
• Number Of I /o: 84
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: OTP
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Bits 3 to 0—Internal Clock Select (TMA3 to TMA0): Bits 3 to 0 select the clock input to TCA.
Bit 3:
TMA3
0
1
Timer Counter A (TCA)
TCA is an 8-bit read-only up-counter, which is incremented by internal clock input. The clock
source for input to this counter is selected by bits TMA3 to TMA0 in timer mode register A
(TMA). TCA values can be read by the CPU in active mode, but cannot be read in subactive
mode. When TCA overflows, the IRRTA bit in interrupt request register 1 (IRR1) is set to 1.
TCA is cleared by setting bits TMA3 and TMA2 of TMA to 11.
Upon reset, TCA is initialized to H'00.
Bit
Initial value
Read/Write
Bit 2:
TMA2
0
1
0
1
TCA7
R
7
0
Bit 1:
TMA1
0
1
0
1
0
1
0
1
TCA6
R
6
0
Bit 0:
TMA0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
TCA5
R
5
0
Prescaler and Divider Ratio
or Overflow Period
PSS, /8192
PSS, /4096
PSS, /2048
PSS, /512
PSS, /256
PSS, /128
PSS, /32
PSS, /8
PSW, 1 s
PSW, 0.5 s
PSW, 0.25 s
PSW, 0.03125 s
PSW and TCA are reset
TCA4
R
4
0
TCA3
R
3
0
(initial value)
Description
TCA2
R
2
0
Function
Interval timer
Clock time base
TCA1
R
1
0
TCA0
R
0
0
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