闲来无事打开了JR9X的壳,发现所用CPU(MCU)是日立的16位处理器,摘录如下:
H8S系列
型号:HD64F2238RBR
FLASH(很有可能是MASK ROM的防止盗版) 256K BYTE
RAM 16K BYTE
时钟主频 13.5MHz(2.7 to 3.6V,)
更详细的如下:
1.1 Features
• High-speed H8S/2000 central processing unit with an internal 16-bit architecture
Upward-compatible with H8/300 and H8/300H CPUs on an object level
Sixteen 16-bit general registers
65 basic instructions
• Various peripheral functions
PC break controller
DMA controller (DMAC)
Supported only by the H8S/2239 Group.
Data transfer controller (DTC)
16-bit timer-pulse unit (TPU)
H8S/2258 Group, H8S/2239 Group, H8S/2238 Group, and H8S/2237 Group: Six channels
H8S/2227 Group: Three channels
8-bit timer (TMR)
H8S/2258 Group, H8S/2239 Group, H8S/2238 Group: Four channels
H8S/2237 Group, H8S/2227 Group: Two channels
Watchdog timer (WDT)
Serial communication interface (SCI)
H8S/2258 Group, H8S/2239 Group, H8S/2238 Group, and H8S/2237 Group: Four
channels (SCI_0 to SCI_3)
H8S/2227 Group: Three channels (SCI_0, SCI_1, and SCI_3)
I2C bus interface (IIC)
Optional function for the H8S/2258 Group, H8S/2239 Group, and H8S/2238 Group
10-bit A/D converter
8-bit D/A converter
Not available in the H8S/2227 Group.
IEBus controller (IEB)
H8S/2258 Group: One channel |