32-bit ARM Cortex™-M3 MCU
HT32F1251/51B/52/53
Memory Map
0xFFFF_FFFF
Reserved
0xE010_0000
AHB Peripherals
0x4010_0000
Private peripheral bus
Reserved
0xE000_0000
0x4400_0000
Reserved
CKCU/RSTCU
Reserved
FMC
0x4008_A000
0x4008_8000
0x4008_2000
APB/AHB bit band alias
32 MB
0x4008_0000
0x4007_0000
0x4006_F000
0x4006_E000
0x4006_B000
0x4006_A000
0x4006_9000
0x4006_8000
0x4004_9000
0x4004_8000
0x4002_5000
0x4002_4000
0x4002_3000
0x4002_2000
0x4001_C000
0x4001_B000
0x4001_A000
0x4001_9000
0x4001_8000
0x4001_1000
0x4001_0000
0x4000_5000
0x4000_4000
0x4000_1000
0x4000_0000
0x4200_0000
0x4010_0000
0x4008_0000
0x4000_0000
Reserved
GPTM1
GPTM0
Reserved
RTC/PWRCU
Reserved
WDT
Peripherals
Reserved
512 KB
512 KB
AHB peripherals
APB peripherals
Reserved
0x2204_0000
0x2200_0000
0x2000_2000
0x2000_1000
0x2000_0800
0x2000_0000
0x1FF0_0400
0x1FF0_0000
0x1F00_0800
0x1F00_0000
Reserved
I2C
SRAM bit band alias
Reserved
256 KB
SRAM
Reserved
EXTI
4 KB on-chip SRAM
2 KB on-chip SRAM
2 KB on-chip SRAM
Reserved
HT32F1253
Reserved
AFIO
HT32F1252
HT32F1251(B)
Reserved
GPIO B
GPIO A
Reserved
OPA/CMP
Reserved
ADC
Option Bytes Flash
Reserved
1 KB
2 KB
Boot Loader
Code
Reserved
Reserved
SPI
0x0000_7C00
0x0000_4000
0x0000_2000
0x0000_0000
15 KB on-chip Flash
8 KB on-chip Flash
8 KB on-chip Flash
HT32F1253
HT32F1252
HT32F1251(B)
Reserved
USART
APB Peripherals
NOTES: 1. For HT32F1251(B), the Flash memory space at 0x0000_2000 to 0x0000_7BFF and the SRAM
memory space at 0x2000_0800 to 0x2000_1FFF are reserved.
2. For HT32F1252, the Flash memory space at 0x0000_4000 to 0x0000_7BFF and the SRAM memory
space at 0x2000_1000 to 0x2000_1FFF are reserved.
Figure 2. HT32F125x Memory Map
Rev. 1.00
16 of 35
May 27, 2011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
