Datasheet

R01DS0011EJ0101 Rev.1.01 Page 5 of 102
Oct 28, 2011
R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 1. Overview
1.1.3 Specifications
Tables 1.6 to 1.8 list the specifications.
Note:
1. No pull-up resistor is provided in the pins P5_4 to P5_6.
Table 1.6 Specifications (1)
Item Function Specification
CPU Central processing unit R8C CPU core
• Number of fundamental instructions: 89
• Minimum instruction execution time:
50 ns (f(XIN) = 20 MHz, VCC = 2.7 V to 5.5 V)
125 ns (f(XIN) = 8 MHz, VCC = 1.8 V to 5.5 V)
• Multiplier: 16 bits × 16 bits → 32 bits
• Multiply-accumulate instruction: 16 bits × 16 bits + 32 bits → 32 bits
• Operating mode: Single-chip mode (address space: 1 Mbyte)
Memory ROM/RAM
Data flash
Refer to Tables 1.9 to 1.12 Product Lists.
Power
Supply
Voltage
Detection
Voltage detection circuit • Power-on reset
• Voltage detection 3 (detection level of voltage detection 0 and
voltage detection 1 selectable)
I/O Ports Programmable
I/O ports
R8C/LA3A Group
• CMOS I/O ports: 26, selectable pull-up resistor
(1)
• High current drive ports: 8
R8C/LA5A Group
• CMOS I/O ports: 44, selectable pull-up resistor
(1)
• High current drive ports: 8
R8C/LA6A Group
• CMOS I/O ports: 56, selectable pull-up resistor
(1)
• High current drive ports: 8
R8C/LA8A Group
• CMOS I/O ports: 72, selectable pull-up resistor
(1)
• High current drive ports: 10
Clock Clock generation circuits 4 circuits: XIN clock oscillation circuit
XCIN clock oscillation circuit (32 kHz)
High-speed on-chip oscillator (with frequency adjustment function)
Low-speed on-chip oscillator
• Oscillation stop detection:
XIN clock oscillation stop detection function
• Frequency divider circuit:
Division ratio selectable from 1, 2, 4, 8, and 16
• Low-power-consumption modes:
Standard operating mode (high-speed clock, low-speed clock, high-
speed on-chip oscillator, low-speed on-chip oscillator), wait mode,
stop mode, power-off mode
Real-time clock (timer RH)
Interrupts R8C/LA3A Group • Number of interrupt vectors: 69
• External Interrupt: 13 (INT
× 5, key input × 8)
• Priority levels: 7 levels
R8C/LA5A Group • Number of interrupt vectors: 69
• External Interrupt: 14 (INT
× 6, key input × 8)
• Priority levels: 7 levels
R8C/LA6A Group • Number of interrupt vectors: 69
• External Interrupt: 16 (INT
× 8, key input × 8)
• Priority levels: 7 levels
R8C/LA8A Group
Watchdog Timer • 14 bits × 1 (with prescaler)
• Selectable reset start function
• Selectable low-speed on-chip oscillator for watchdog timer