Features: • Two-way register configurationSixteen 8-bit general registers, or Eight 16-bit general registers• Instruction set with 57 basic instructions, including: Multiply and divide instructionsPowerful bit-manipulation instructions• Eight addre...
H8/3437 Series: Features: • Two-way register configurationSixteen 8-bit general registers, or Eight 16-bit general registers• Instruction set with 57 basic instructions, including:ᣣ...
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Item |
Symbol |
Rating |
Unit | |
Supply voltage |
VCC |
0.3 to +7.0 |
V | |
I/O buffer supply voltage |
VCCB |
0.3 to +7.0 |
V | |
Flash memory programming voltage (Dual-power-supply F-ZTAT™ version) |
FVPP |
0.3 to +13.0 |
V | |
Programming voltage |
VPP |
0.3 to +13.5 |
V | |
Input voltage |
Pins other than ports 7, MD1, P86, P97, PA7 to PA4 |
Vin |
0.3 to VCC + 0.3 |
V |
P86, P97, PA7 to PA4 |
Vin |
0.3 to VCCB + 0.3 |
V | |
Port 7 |
Vin |
0.3 to AVCC + 0.3 |
V | |
MD1 |
Vin |
Dual-power-supply F-ZTAT version: 0.3 to +13.0 Other versions: 0.3 to VCC + 0.3 |
V | |
Reference supply voltage |
AVref |
0.3 to AVCC + 0.3 |
V | |
Analog supply voltage |
AVCC |
0.3 to +7.0 |
V | |
Analog input voltage |
VAN |
0.3 to AVCC + 0.3 |
V | |
Operating temperature |
Topr |
Regular specifications: 20 to +75 |
˚C | |
Wide-range specifications: 40 to +85 |
˚C | |||
Storage temperature |
Tstg |
55 to +125 |
˚C |
Caution: Exceeding the absolute maximum ratings shown in table 23.1 can permanently destroy the chip.*
Note: * FVPP must not exceed 13 V and VPP must not exceed 13.5 V, including allowances for peak overshoot. For the dual-power-supply F-ZTAT version, MD1 must not exceed 13 V, including an allowance for peak overshoot.
All the H8/3437 Series general registers can be used as both data registers and address registers. When used as address registers, the general registers are accessed as 16-bit registers (R0 to R7). When used as data registers,H8/3437 Series can be accessed as 16-bit registers, or the high and low bytes can be accessed separately as 8-bit registers (R0H to R7H and R0L to R7L). R7 also functions as the stack pointer, used implicitly by hardware in processing interrupts and subroutine calls. In assembly-language coding, R7 can also be denoted by the letters SP. As indicated in figure 2.2, R7 (SP) points to the top of the stack.