UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 94

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
3.2.2 General-purpose registers
purpose registers consists of 4 banks, each bank consisting of eight 8-bit registers (X, A, C, B, E, D, L, and H).
BC, DE, and HL).
names (R0 to R7 and RP0 to RP3).
register bank configuration, an efficient program can be created by switching between a register for normal processing and
a register for interrupts for each bank.
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
General-purpose registers are mapped at particular addresses (FEE0H to FEFFH) of the data memory. The general-
Each register can be used as an 8-bit register, and two 8-bit registers can also be used in a pair as a 16-bit register (AX,
These registers can be described in terms of function names (X, A, C, B, E, D, L, H, AX, BC, DE, and HL) and absolute
Register banks to be used for instruction execution are set by the CPU control instruction (SEL RBn). Because of the 4-
FEFFH
FEF8H
FEF0H
FEE8H
FEE0H
FEFFH
FEF8H
FEF0H
FEE8H
FEE0H
Register bank 0
Register bank 1
Register bank 2
Register bank 3
Register bank 0
Register bank 1
Register bank 2
Register bank 3
Figure 3-14. Configuration of General-Purpose Registers
(a) Function name
(b) Absolute name
15
15
16-bit processing
16-bit processing
RP3
RP2
RP1
RP0
HL
DE
BC
AX
0
0
CHAPTER 3 CPU ARCHITECTURE
7
7
8-bit processing
8-bit processing
R7
R6
R5
R4
R3
R2
R1
R0
H
D
E
B
C
A
X
L
0
0
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