R8C/1A Group, R8C/1B Group
1. Overview
Rev.1.30
Dec 08, 2006
Page 2 of 315
REJ09B0252-0130
1.2
Performance Overview
Table 1.1 outlines the Functions and Specifications for R8C/1A Group and Table 1.2 outlines the
Functions and Specifications for R8C/1B Group.
NOTE:
1. I
2
C bus is a trademark of Koninklijke Philips Electronics N. V.
2. Please contact Renesas Technology sales offices for the Y version.
Table 1.1
Functions and Specifications for R8C/1A Group
Item
Specification
CPU
Number of fundamental
instructions
89 instructions
Minimum instruction execution
time
50 ns (f(XIN) = 20 MHz, VCC = 3.0 to 5.5 V)
100 ns (f(XIN) = 10 MHz, VCC = 2.7 to 5.5 V)
Operating mode
Single-chip
Address space
1 Mbyte
Memory capacity
See
Table 1.3 Product Information for R8C/1A Group
Peripheral
Functions
Ports
I/O ports: 13 pins (including LED drive port)
Input port: 3 pins
LED drive ports
I/O ports: 4 pins
Timers
Timer X: 8 bits × 1 channel, timer Z: 8 bits × 1 channel
(Each timer equipped with 8-bit prescaler)
Timer C: 16 bits × 1 channel
(Input capture and output compare circuits)
Serial interfaces
1 channel
Clock synchronous serial I/O, UART
1 channel
UART
Clock synchronous serial interface 1 channel
I
2
C bus Interface
(1)
Clock synchronous serial I/O with chip select (SSU)
A/D converter
10-bit A/D converter: 1 circuit, 4 channels
Watchdog timer
15 bits × 1 channel (with prescaler)
Reset start selectable, count source protection mode
Interrupts
Internal: 11 sources, External: 4 sources, Software: 4 sources,
Priority levels: 7 levels
Clock generation circuits
2 circuits
• Main clock oscillation circuit (with on-chip feedback
resistor)
• On-chip oscillator (high speed, low speed)
High-speed on-chip oscillator has a frequency adjustment
function
Oscillation stop detection function
Main clock oscillation stop detection function
Voltage detection circuit
On-chip
Power-on reset circuit
On-chip
Electric
Characteristics
Supply voltage
VCC = 3.0 to 5.5 V (f(XIN) = 20 MHz)
VCC = 2.7 to 5.5 V (f(XIN) = 10 MHz)
Current consumption
Typ. 9 mA (VCC = 5.0 V, f(XIN) = 20 MHz, A/D converter stopped)
Typ. 5 mA (VCC = 3.0 V, f(XIN) = 10 MHz, A/D converter stopped)
Typ. 35
µ
A (VCC = 3.0 V, wait mode, peripheral clock off)
Typ. 0.7
µ
A (VCC = 3.0 V, stop mode)
Flash Memory
Programming and erasure voltage
VCC = 2.7 to 5.5 V
Programming and erasure
endurance
100 times
Operating Ambient Temperature
-20 to 85
°
C
-40 to 85
°
C (D version)
-20 to 105
°
C (Y version)
(2)
Package
20-pin molded-plastic LSSOP
20-pin molded-plastic SDIP
28-pin molded-plastic HWQFN
