HD64F3437TF16 Datasheet, PDF (31/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

Table 1.1 Features
Item
CPU
Memory
16-bit free-running
timer (1 channel)
8-bit timer
(2 channels)
PWM timer
(2 channels)
Watchdog timer
(WDT) (1 channel)
Specification
Two-way general register configuration
• Eight 16-bit registers, or
• Sixteen 8-bit registers
High-speed operation
• Maximum clock rate (ø clock): 16 MHz at 5 V, 12 MHz at 4 V or 10 MHz
at 3 V
• 8- or 16-bit register-register add/subtract: 125 ns (16 MHz), 167 ns
(12 MHz), 200 ns (10 MHz)
• 8 × 8-bit multiply: 875 ns (16 MHz), 1167 ns (12 MHz), 1400 ns (10 MHz)
• 16 ÷ 8-bit divide: 875 ns (16 MHz), 1167 ns (12 MHz), 1400 ns (10 MHz)
Streamlined, concise instruction set
• Instruction length: 2 or 4 bytes
• Register-register arithmetic and logic operations
• MOV instruction for data transfer between registers and memory
Instruction set features
• Multiply instruction (8 bits × 8 bits)
• Divide instruction (16 bits ÷ 8 bits)
• Bit-accumulator instructions
• Register-indirect specification of bit positions
• H8/3437: 60-kbyte ROM; 2-kbyte RAM
• H8/3436: 48-kbyte ROM; 2-kbyte RAM
• H8/3434: 32-kbyte ROM; 1-kbyte RAM
• One 16-bit free-running counter (can also count external events)
• Two output-compare lines
• Four input capture lines (can be buffered)
Each channel has
• One 8-bit up-counter (can also count external events)
• Two time constant registers
• Duty cycle can be set from 0 to 100%
• Resolution: 1/250
• Overflow can generate a reset or NMI interrupt
• Also usable as interval timer
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