ML674001/ML67Q4002/ML67Q4003
Block Diagram
Internal (MCP)
FLASH ROM
ML67Q4002: 256KB
ML67Q4003: 512KB
TDI
TDO
nTRST
TMS
TCK
PIOC[6:2] / XA[23:19]
XA[18:0]
XD[15:0]
PIOC[7] / XWR
XOE_N
5
Internal RAM
32KB
XWE_N
XBWE_N[1:0]
XROMCS_N
XRAMCS_N
µPLAT-7B
XIOCS_N[3:0]
XBS_N[1:0]
Internal & External
Memory Controller
ARM7TDMI
PIOD[0] / XWAIT
PIOD[1] / XCAS_N
PIOD[2] / XRAS_N
PIOD[3] / XSDCLK
PIOD[4] / XSDCS_N
PIOD[5] / XSDCKE
PIOD[6] / XDQM[1] / XCAS_N[1]
PIOD[7] / XDQM[0] / XCAS_N[0]
Boot ROM
4KB
TIC
DRAMC
Exp. IRC
AHB Bridge
APB Bridge
AMBA
AHB Bus
APB Bridge
PIOB[0] / DREQ[0]
PIOB[2] / DREQ[1]
IRC
AMBA
2
2
2
DMAC
PIOB[1] / DREQCLR[0]
PIOB[3] / DREQCLR[1]
APB Bus
PIOB[5:4] / TCOUT[1:0]
System
TIMER
System
SIO
Controller
TIMER
16 bit x 6ch
PWM
16 bit x 2ch
PIOC[1:0] / PWMOUT[1:0]
2
RESET_N
PIOB[6] / STXD
PIOB[7] / SRXD
GPIO
WDT
SSIO
PIOA[7:0]
PIOB[7:0]
PIOC[7:0]
PIOD[7:0]
PIOE[9:0]
42
OSC0
OSC1_N
CKOE_N
CKO
CGB
PIOE[0] / SDO
PIOE[1] / SDI
PIOE[2] / SCLK
3
2
5
8
PIOE[8:5] / EXINT[3:0]
5
PIOE[9] / EFIQ_N
2
I C
PIOE[3] / SDA
PIOE[4] / SCL
VDD_CORE
VDD_IO
GND
AVDD
AGND
DRAME_N
TEST
BSEL[1:0]
FWR
A/D
AIN[3:0]
VREF
UART
(16550)
PIOA[0] / SIN
PIOA[1] / SOUT
PIOA[2] / CTS
PIOA[3] / DSR
PIOA[4] / DCD
PIOA[5] / DTR
PIOA[6] / RTS
PIOA[7] / RI
JSEL
2 • Oki Semiconductor
April 2004, Rev 2.0
OKI [ OKI ELECTRONIC COMPONETS ]
