CPU
1）4-位简化的8051 架构
2）连续寻址，无页程序内存.
3）51 指令包括入栈，出栈和逻辑指令.
4）指令周期 : 系统频率/6
5）多级子程序有基于栈的RAM嵌套。
6）片上内存
FLASH : 1024 字节 (包括128 EEPROM)
RAM : 64 nibbles (including stack)
ISP (在系统编程) of FLASH
IAP (在应用编程) of FLASH
I/O Ports
P0 : 4-bit parallel I/O (开漏输出)
P1 : Parallel I/O (开漏输出), 4-bit for 24-pin, 2-bit for 20-pin.
P2, P3 : 4-bit parallel/bit-selectable I/O (Open drain output)
P4 : Parallel I/O (Open drain output).Two bits if internal clock is used.
Additional two bits for 24-pin packages.
REM output (遥控发射器)
内建用于 I.R. LED 驱动的
三极管IOL= 300 mA (Max.) at VDD = 3V and VO = 0.4V
载频脉冲发生器 : 7 types
内建
振荡器Crystal/CeramIC resonator
精准的内部振荡器
工厂校准到 ± 3% at 2.1 ~ 3.3V
工厂校准到 ± 1% at 2.5V
The Factory Calibration for 7.28MHz is applied only for GC49C501RX devices.
Built-in Reset
Power-on Reset, Power-fail Reset
WDT (Watch-Dog Timer) Reset
Clock switching reset
Power Management
Power-down (stop) mode
Release stop by input changes
Sleep mode
Power Consumption
Stop mode: ＜0.1uA (Typ.) at 2.0V, 1 uA (Max.) at 5.0V
Normal mode : 400 uA (Typ.) at 2.0V, FSYS = 4 MHz
Operating frequency vs. voltage
Max. FOSC= 10 MHz (2.7 V ≤ VDD ≤ 5.5V)
Max. FOSC= 5 MHz (1.8 V ≤ VDD ≤ 2.7V)
Operating temperature : -20 °C ~ 85 °C
ESD protection up to 2,000V
Latch-up protection up to ±200mA
Package
24-pin SOIC
20-pin SOIC
8-pin SOIC/SPDIP